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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_RetroactiveApplicationOfRecapitalization" xlink:to="mrln_RetroactiveApplicationOfRecapitalization_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_ScheduleOfStockOptionActivityAbstract" xlink:to="mrln_ScheduleOfStockOptionActivityAbstract_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_WeightedAverageExercisePriceRetroactiveApplicationOfRecapitalization" xlink:to="mrln_WeightedAverageExercisePriceRetroactiveApplicationOfRecapitalization_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RestatementAdjustmentMember" xlink:to="srt_RestatementAdjustmentMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ConsolidatedEntitiesAxis" xlink:to="srt_ConsolidatedEntitiesAxis_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentsTable" xlink:to="us-gaap_FreshStartAdjustmentsTable_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis" xlink:to="us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfLoanCosts" xlink:to="us-gaap_PaymentsOfLoanCosts_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReorganizationChapter11LineItems" xlink:to="us-gaap_ReorganizationChapter11LineItems_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReorganizationChapter11PlanEffectAdjustmentMember" xlink:to="us-gaap_ReorganizationChapter11PlanEffectAdjustmentMember_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_BenefitFromResearchAndDevelopmentAgreementMember" xlink:to="mrln_BenefitFromResearchAndDevelopmentAgreementMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_ChangeInFairValueOfConvertiblePromissoryNotesMember" xlink:to="mrln_ChangeInFairValueOfConvertiblePromissoryNotesMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_ChangeInFairValueOfLongtermDebtMember" xlink:to="mrln_ChangeInFairValueOfLongtermDebtMember_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_ConsultingAndProfessionalServicesMember" xlink:to="mrln_ConsultingAndProfessionalServicesMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_DepreciationMember" xlink:to="mrln_DepreciationMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_FacilitiesMember" xlink:to="mrln_FacilitiesMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_InterestExpensesMember" xlink:to="mrln_InterestExpensesMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_InterestIncomesMember" xlink:to="mrln_InterestIncomesMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_OtherExpensesMember" xlink:to="mrln_OtherExpensesMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_OtherExpensMember" xlink:to="mrln_OtherExpensMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_PersonnelMember" xlink:to="mrln_PersonnelMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_SoftwareMember" xlink:to="mrln_SoftwareMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_TravelAndEntertainmentMember" xlink:to="mrln_TravelAndEntertainmentMember_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyLineItems" xlink:to="mrln_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyLineItems_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Depreciation" xlink:to="us-gaap_Depreciation_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mrln_ShareBasedPaymentArrangementRecognizedAmountTable" xlink:to="mrln_ShareBasedPaymentArrangementRecognizedAmountTable_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_TitleOfIndividualAxis" xlink:to="srt_TitleOfIndividualAxis_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentTransitionReport" xlink:to="dei_DocumentTransitionReport_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfOperatingSegments" xlink:to="us-gaap_NumberOfOperatingSegments_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfReportableSegments" xlink:to="us-gaap_NumberOfReportableSegments_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityInteractiveDataCurrent" xlink:to="dei_EntityInteractiveDataCurrent_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentQuarterlyReport" xlink:to="dei_DocumentQuarterlyReport_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingCodmProfitLossMeasureHowUsedDescription" xlink:to="us-gaap_SegmentReportingCodmProfitLossMeasureHowUsedDescription_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CoverAbstract" xlink:to="dei_CoverAbstract_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentInformationLineItems" xlink:to="dei_DocumentInformationLineItems_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentInformationTable" xlink:to="dei_DocumentInformationTable_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendRatePercentage" xlink:to="us-gaap_PreferredStockDividendRatePercentage_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockConvertibleConversionPrice" xlink:to="us-gaap_PreferredStockConvertibleConversionPrice_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConversionOfStockSharesConverted1" xlink:to="us-gaap_ConversionOfStockSharesConverted1_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityExTransitionPeriod" xlink:to="dei_EntityExTransitionPeriod_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssuedPricePerShare" xlink:to="us-gaap_SharesIssuedPricePerShare_lbl" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityShellCompany" xlink:to="dei_EntityShellCompany_lbl" />
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current assets:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets, Current [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total cash from Inflection Point</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and contingencies (Note 14)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock: $0.0001 par value; 800,000,000 and 138,655,675 shares authorized; 84,544,557 and 70,959,389 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible promissory notes (Note 8)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Notes Payable, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deposits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits Assets, Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease right-of-use assets, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Right-of-Use Asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtNonCurrentPortionNetFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, non-current portion, net fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtNonCurrentPortionNetFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Non-Current Portion, Net Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtNonCurrentPortionNetFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt, non-current portion, net fair value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid expenses and other current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense and Other Assets, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property and equipment, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total property and equipment, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Series A Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Investments, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders&#8217; deficit:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityCarryingAmountAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityCarryingAmountAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity, Carrying Amount, Attributable to Parent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant liabilities (Note 9)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants and Rights Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtNonCurrentPortionNetAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, non-current portion, net amortized cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtNonCurrentPortionNetAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Non-Current Portion, Net Amortized Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtNonCurrentPortionNetAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt, non-current portion, net amortized cost.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities, mezzanine equity, and stockholders&#8217; deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Current [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtCurrentPortionNetAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, current portion, net amortized costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtCurrentPortionNetAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Current Portion, Net Amortized Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtCurrentPortionNetAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt, current portion, net amortized cost.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtCurrentPortionNetFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, current portion, net fair value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtCurrentPortionNetFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Current Portion, Net Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LongTermDebtCurrentPortionNetFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt, current portion, net fair value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liabilities, current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Less current portion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Liability, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, current portion, net ($19,175 at fair value and $96 at amortized cost, net as of December 31, 2025) (Note 8)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, non-current portion, net ($12,207 at fair value and $577 at amortized cost, net as of December 31, 2025) (Note 8)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total long-term debt, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">2024 LSA Loans, non-current portion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Excluding Current Maturities, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liabilities, non-current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Long-term portion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Liability, Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLossOnContracts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract loss provision</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLossOnContracts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision for Loss on Contracts</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemable Convertible</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Redeemable Convertible Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accumulated deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings (Accumulated Deficit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Ordinary shares, authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares Authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total other expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nonoperating Income (Expense)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonoperating Income (Expense)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostOfRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost of revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostOfRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cost of Revenue, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preference shares, outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Preferred shares outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrantsInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of redeemable convertible preferred stock upon exercise of warrants (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrantsInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Redeemable Convertible Preferred Stock upon Exercise of Warrants in Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrantsInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of redeemable convertible preferred stock upon exercise of warrants in shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Noncash Expense, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioPreviouslyReportedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Previously Reported</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioPreviouslyReportedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Previously Reported [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments, Contingencies, and Indemnification</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental non-cash investing and financing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncash Investing and Financing Items [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfMergerRelatedCostsFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment of costs directly attributable to the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfMergerRelatedCostsFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Merger Related Costs, Financing Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accounts Payable, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance (in shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares, Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional Paid-In Capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid-in Capital [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock in connection with the Merger (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, New Issues</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfConvertiblePromissoryNotes_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Change in fair value of convertible promissory notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfConvertiblePromissoryNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value of convertible promissory notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfConvertiblePromissoryNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Fair Value of Convertible Promissory Notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfConvertiblePromissoryNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Change in fair value of convertible promissory notes.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LossOnForeignCurrencyExchangeRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss on foreign currency exchange rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_LossOnForeignCurrencyExchangeRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of loss on foreign currency exchange rate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IncreaseDecreaseInContractLossProvision_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract loss provision</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IncreaseDecreaseInContractLossProvision_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Contract Loss Provision</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IncreaseDecreaseInContractLossProvision_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of contract loss provision.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Common Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Prepaid expenses and other current assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Prepaid Expense and Other Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by financing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValuesOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Change in fair value of long-term debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValuesOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Fair Values of Long-Term Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValuesOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of change in fair value of long-term debt.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesIssuanceOfOrdinarySharesUponTheExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock upon exercise of warrants (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesIssuanceOfOrdinarySharesUponTheExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares Issuance Of Common Stock Upon The Exercise Of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesIssuanceOfOrdinarySharesUponTheExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The number of issuance of common stock upon the exercise of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesAPreferredStockDividendsAndAccretion_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A Preferred Stock dividends and accretion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesAPreferredStockDividendsAndAccretion_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A Preferred Stock Dividends and Accretion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesAPreferredStockDividendsAndAccretion_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series A Preferred Stock dividends and accretion.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Cash Flows [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from financing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net income to net cash used in operating activities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash, cash equivalents, and restricted cash at end of period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash, cash equivalents, and restricted cash at beginning of period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net increase (decrease) in cash, cash equivalents, and restricted cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_EquitybasedPaymentsToNonemployees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity-based payments to non-employees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_EquitybasedPaymentsToNonemployees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of equity-based payments to non-employees.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments, Contingencies, and Indemnification [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment and Geographic Information [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash used in operating activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net cash used in operating activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Operating Activity, Including Discontinued Operation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WriteOffOfCapitalizedTransactionsCostsRelatedToIssuanceOfPipeWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Write-off of capitalized transactions costs related to issuance of PIPE Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WriteOffOfCapitalizedTransactionsCostsRelatedToIssuanceOfPipeWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Write-Off of Capitalized Transactions Costs Related to Issuance of Pipe Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WriteOffOfCapitalizedTransactionsCostsRelatedToIssuanceOfPipeWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents the amount of write-off of capitalized transactions costs related to issuance of pipe warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock in connection with the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, New Issues</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInContractWithCustomerLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInContractWithCustomerLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Deferred revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInContractWithCustomerLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Contract with Customer, Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Operating Lease Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash used in investing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment of transaction costs related to issuance of Series A Preferred Stock in connection with PIPE</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Repurchase of Preferred Stock and Preference Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfSeriesAPreferredStocksToCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion Of Series A Preferred Stocks To Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfSeriesAPreferredStocksToCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion of Series A Preferred Stock to common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Series A Preferred Stock in exchange for 2024 LSA Amendment Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Series A Preferred Stock in exchange for 2024 LSA Amendment Warrant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of issuance of series A preferred stock in exchange for 2024 LSA amendment warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Proceeds from issuance of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of warrants in the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of right-of-use assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseRightOfUseAssetAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease, Right-of-Use Asset, Amortization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on disposal of property and equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Disposition of Property Plant Equipment, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value of warrant liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Change in fair value of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Adjustment of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accounts receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accounts Receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accrued Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Significant Segment Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Segment Reporting Information, by Segment [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of shares issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of shares issued.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PrivateInvestmentInPublicEquityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PIPE [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PrivateInvestmentInPublicEquityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Private Investment In Public Equity [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ReverseRecapitalizationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reverse Recapitalization [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transaction costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transaction Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Transaction costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Product and Service [Axis]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalizedContractCostAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reverse Recapitalization [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalizedContractCostLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reverse Recapitalization [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalizedContractCostLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Contract Cost [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preference shares, par value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Preferred shares, par value (in Dollars per share)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Par or Stated Value Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenue from Contract with Customer [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Significant Accounting Policies [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDebtNetOfIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDebtNetOfIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Debt, Net of Issuance Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenues, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recently Adopted Accounting Pronouncements</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Research and Development Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Research and Development Expense, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvertisingCostsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Advertising Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvertisingCostsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advertising Cost [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment of Long-Lived Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RiskAndUncertaintiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk and Uncertainties</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RiskAndUncertaintiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risk and Uncertainties [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RiskAndUncertaintiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The accounting disclosure for risk and uncertainties.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Loss per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis of Presentation and Consolidation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Basis of Accounting, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromOtherEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross proceeds</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exchange ratio</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurements</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueRemainingPerformanceObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining performance obligations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueRemainingPerformanceObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenue, Remaining Performance Obligation, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accounts Receivable</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfMergerImpactOfCommonStockTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Merger Impact of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfMergerImpactOfCommonStockTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Merger Impact of Common Stock [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfMergerImpactOfCommonStockTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tabular disclosure of merger impact of common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Merger Impact of Common Stock [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Table]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueExerciseOfStockOptionsPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of stock options prior to the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueExerciseOfStockOptionsPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock issued during period value exercise of stock options prior to the merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueExerciseOfStockOptionsPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount represents exercise of stock options prior to the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesExerciseOfStockOptionsPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of stock options prior to the Merger (in shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesExerciseOfStockOptionsPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock issued during period shares exercise of stock options prior to the merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesExerciseOfStockOptionsPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The shares represents exercise of stock options prior to the merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueSharesUponTheExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock upon exercise of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueSharesUponTheExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Shares Upon The Exercise Of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueSharesUponTheExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of issuance of common stock upon the exercise of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of redeemable convertible preferred stock upon exercise of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Redeemable Convertible Preferred Stock upon Exercise of Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of redeemable convertible preferred stock upon exercise of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfRedeemableConvertiblePreferredStockToCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of redeemable convertible preferred stock to common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfRedeemableConvertiblePreferredStockToCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Redeemable Convertible Preferred Stock to Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfRedeemableConvertiblePreferredStockToCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion of redeemable convertible preferred stock to common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfRedeemableConvertiblePreferredStockToCommonStockInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of redeemable convertible preferred stock to common stock (in Shares)</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfRedeemableConvertiblePreferredStockToCommonStockInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion of redeemable convertible preferred stock to common stock in shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RestrictedCashPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Cash</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RestrictedCashPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclourse of resticted cas accounting policy.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TransactionCostsCapitalized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capitalized transaction costs</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TransactionCostsCapitalized_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capitalized transaction costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Price of per share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Warrant Liabilities, beginning</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Noncurrent</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring and Nonrecurring [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Company&#8217;s Fair Value Measurement Activity Using Unobservable Inputs and Associated Unrealized Losses (Gains) [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Non-cash change in fair value of 2024 LSA Loans</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contractual repayments of principal</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Extinguishment of 2024 LSA Loans</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Loan outstanding amount, ending</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Loan outstanding amount, beginning</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value of convertible promissory notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Conversion of convertible promissory notes in the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Fair value as of March 31, 2026</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Fair value as of December 31, 2025</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan Name [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan Name [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt, Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt, Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_DebtTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_DebtTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt (Tables)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfOutstandingLongTermDebtAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Outstanding Long Term Debt [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less unamortized deferred financing costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Long-term debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance">Less current maturities of long-term debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">2024 LSA Loans, current portion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Current Maturities, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Maturity, Year One</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Maturity, Year Three</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Maturity, Year Two</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PrefererredStockNumberOfSharesIssuedAndOutstandingBeforeClosing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares issued and outstanding before closing</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PrefererredStockNumberOfSharesIssuedAndOutstandingBeforeClosing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prefererred stock number of shares issued and outstanding before closing</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PrefererredStockNumberOfSharesIssuedAndOutstandingBeforeClosing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Prefererred stock number of shares issued and outstanding before closing.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfConversionOfRedeemableConvertiblePreferredStockAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Conversion Redeemable Convertible Preferred Stock [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Components of Lease Expense [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockAccretionOfRedemptionDiscount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Series A Preferred Stock dividends and accretion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockAccretionOfRedemptionDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Accretion of Redemption Discount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Basic and Diluted Net Loss Computations [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net loss per common share, diluted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net loss per share diluted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TerminationPenaltyAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Termination penalty Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TerminationPenaltyAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of termination penalty.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated total future payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leases [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Two</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less present value discount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_AircraftMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aircraft [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfPropertyAndEquipmentNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Property and Equipment, Net [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Accumulated depreciation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComputerEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Computer equipment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComputerEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Computer Equipment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leasehold improvements [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leasehold Improvements [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OfficeEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Office furniture &amp; equipment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OfficeEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Office Equipment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Asset, Class [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total property and equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Property and Equipment, Net [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_InflectionPointOperatingAccountMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inflection Point operating account [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MerlinMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Merlin [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revision of Prior Period [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate Intrinsic Value, Exercisable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price (Per Share), Forfeited</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Aggregate Intrinsic Value, Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Number of Options, Outstanding, Ending</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price (Per Share), Exercisable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanCostRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contribution plan cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanCostRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan, Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Exercise price per warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Exercise Price Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right, Exercise Price of Warrants or Rights</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Purchase of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares Underlying Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right, Number of Securities Called by Warrants or Rights</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revision of Prior Period [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-Based Compensation [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Options, Exercisable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Options, Granted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Granted shares of common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RedemptionPrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Redemption Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RedemptionPrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Redemption price per shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PurchaserRightNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Purchaser Right Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PreFundPIPEMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pre Fund PIPE [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Outstanding Long Term Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Maturities of Long-Term Debt [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfConsolidatedStatementsOfOperationsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Consolidated Statements of Operations [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock-based compensation expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoFourLSAThirdTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 LSA Third Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoFourLSAThirdTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Zero Two Four LSA Third Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoFourLSASecondTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 LSA Second Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoFourLSASecondTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Zero Two Four LSA Second Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoFourLSAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 LSA [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoFourLSAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Zero Two Four LSA [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Line of Credit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsCurrentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt issuance costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsCurrentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Current, Net, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfAccruedInterestPaidInkind_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of accrued interest paid in-kind</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfAccruedInterestPaidInkind_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of accrued interest paid in-kind.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of accrued interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of accrued interest.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash equivalents:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalent [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandTwentyFourLSALoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">2024 LSA Loans [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputCalibratedDiscountRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Calibrated discount rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputCalibratedDiscountRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Calibrated Discount Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputCreditRatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit rating [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputCreditRatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Credit Rating [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputEquityValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Merger scenario - Equity value [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputEquityValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Equity value [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputExpectedFinancingAmountMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Merger scenario - Expected financing amount [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputExpectedFinancingAmountMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Expected financing amount [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputExpectedFinancingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Merger scenario - Expected financing date [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputExpectedFinancingDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Expected financing date [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputExpectedLiquidityEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Merger scenario - Expected liquidity event [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputExpectedLiquidityEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Expected Liquidity Event [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputExpectedMergerDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Merger scenario - Equity volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputExpectedMergerDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Expected Merger Date [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputFairValueOfCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of common stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputFairValueOfCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Fair Value of Common Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputFairValueOfSeriesBPrimeRedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of Series B Prime redeemable convertible preferred stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputFairValueOfSeriesBPrimeRedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Fair value of Series B Prime redeemable convertible preferred stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MergerScenarioEquityVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Merger scenario - Equity volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MergerScenarioEquityVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Merger Scenario - Equity Volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PIPEWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PIPE Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WarrantLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Liabilities [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Promissory Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Notes Payable [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Schedule of Assumptions Used in Determining Fair Value of Warrant Liabilities and Convertible Promissory Notes [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurements [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsQuantitativeInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assumptions Used in Determining Fair Value of Warrant Liabilities and Convertible Promissory Notes [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsQuantitativeInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputDiscountRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputDiscountRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Discount Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedDividendRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend yield [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedDividendRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Expected Dividend Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedTermMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining term (years) [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedTermMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Expected Term [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Warrants to Purchase Common Stock [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value of warrant liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Fair Value Adjustment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable lease expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Lease, Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Denominator:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average shares outstanding:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities, Name [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Future Minimum Operating Lease Expense [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Present value of lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net loss attributable to common stockholders</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average common shares outstanding, basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average shares outstanding Basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average common shares outstanding, diluted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average shares outstanding diluted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsNoteDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Numerator:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Attributable to Parent [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Loss Per Share [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net loss per share:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Schedule of Basic and Diluted Net Loss Computations [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_FirstAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Anniversary [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_FifthAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fifth Anniversary [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PreferredStockProtectiveRightsThresholdPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock protective rights threshold percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PreferredStockProtectiveRightsThresholdPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Protective Rights Threshold Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PreferredStockProtectiveRightsThresholdPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The preferred stock protective rights threshold percentage.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SecondAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Second Anniversary [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ShareholdersDeficitDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mezzanine Equity and Stockholders&#8217; Deficit (Tables)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ShareholdersDeficitDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shareholders&#8217; Deficit (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leases</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Leases [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total future minimum lease payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year One</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Five</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Four</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Dilutive Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CommonStockWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CommonStockWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Warrants to Purchase Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for income taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense (Benefit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Asset, Class [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VehiclesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Motor vehicles [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VehiclesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vehicles [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_AircraftExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aircraft expense [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_BenefitFromContractLossProvisionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Benefit from contract loss provision [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfFreshStartAdjustmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reorganization, Chapter 11 [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfConsolidatedStatementsOfOperationsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Consolidated Statements of Operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfConsolidatedStatementsOfOperationsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Consolidated Statements of Operations [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfConsolidatedStatementsOfOperationsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Consolidated Statements of Operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property and Equipment, Net [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_AircraftEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aircraft equipment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfInformationNetSalesAndPropertyAndEquipmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Information Net Sales and Property and Equipment [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfInformationNetSalesAndPropertyAndEquipmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Information Net Sales and Property and Equipment [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Domain]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_InflectionPointTrustAccountMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inflection Point trust account [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfNetProceedsFromTheMergerAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Net Proceeds from the Merger [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segments [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of effective interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Effective Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Fair Value Disclosure</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segments [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CostOfRevenueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cost of revenue [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ResearchAndDevelopmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Research and development [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Name [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected dividend yield</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected volatility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoTwoPGFLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022 PGF Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoTwoPGFLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Zero Two Two PGF Loan [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoOneLSASecondTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021 LSA Second Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoOneLSASecondTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Zero Two One LSA Second Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 3 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 2 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected life in years</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfConsolidatedStatementsOfOperationsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Consolidated Statements of Operations [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAllocationAndClassificationInFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Recognized Amount [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 1 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 1 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Asset</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnsecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured convertible promissory notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnsecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unsecured Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MoneyMarketMutualFunds_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Money market mutual funds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MoneyMarketMutualFunds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Money Market Mutual Funds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MoneyMarketMutualFunds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of money market mutual funds.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, by Balance Sheet Grouping [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Volume of weighted average price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ThirdAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Third Anniversary [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Small Business</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mezzanine Equity and Stockholders&#8217; Deficit [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CapitalizedTransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capitalized transaction costs (Note 2)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CapitalizedTransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Transaction Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CapitalizedTransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capitalized transaction costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts receivable, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable, after Allowance for Credit Loss, Current, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities, Current</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid in Capital, Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrantsInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Series A Preferred Stock in exchange for 2024 LSA Amendment Warrants (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrantsInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Series A Preferred Stock in Exchange for 2024 LSA Amendment Warrants in Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrantsInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of Series A Preferred Stock in exchange for 2024 LSA Amendment Warrants in shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RetroactiveApplicationOfRecapitalizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retroactive Application of Recapitalization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RetroactiveApplicationOfRecapitalizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retroactive Application of Recapitalization [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENotesToSeriesAPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Notes to Series A Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENotesToSeriesAPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Notes to Series A Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENotesToSeriesAPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Notes to Series A Preferred Stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENotesToSeriesAPreferredStockInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Notes to Series A Preferred Stock (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENotesToSeriesAPreferredStockInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Notes to Series A Preferred Stock in Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENotesToSeriesAPreferredStockInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Notes to Series A Preferred Stock in Shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Series A Preferred Stock in exchange for 2024 LSA Amendment Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Series A Preferred Stock in Exchange for 2024 LSA Amendment Warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInExchangeFor2024LSAAmendmentWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of Series A Preferred Stock in exchange for 2024 LSA Amendment Warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RedeemablePreferredStockDividends_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Series A Preferred Stock dividends and accretion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RedeemablePreferredStockDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Redeemable Preferred Stock Dividends</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncomeDisclosureNonoperatingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other (expense) income:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncomeDisclosureNonoperatingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Income, Nonoperating [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating expenses:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loss before provision for income taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value of long-term debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Fair Value of Long-Term Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Change in fair value of long-term debt.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preference shares, issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and administrative</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and Administrative Expense, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ContractLossAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract loss adjustments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ContractLossAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract Loss Adjustments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ContractLossAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Contract loss adjustments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preference shares, authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Preferred shares, authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Authorized</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GrossProfit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gross profit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GrossProfit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gross Profit, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net loss per share basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net loss per common share, basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseNonoperating_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseNonoperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Nonoperating, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, par value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Par or Stated Value Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total operating expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfSeriesAPreferredStockToCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of Series A Preferred Stock to common stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfSeriesAPreferredStockToCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Series A Preferred Stock to Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfSeriesAPreferredStockToCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion of Series A Preferred Stock to common stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfSeriesAPreferredStockToCommonStockInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of Series A Preferred Stock to common stock (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfSeriesAPreferredStockToCommonStockInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Series A Preferred Stock to Common Stock in Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfSeriesAPreferredStockToCommonStockInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion of Series A Preferred Stock to common stock in shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Nonoperating Income (Expense), Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loss from operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Income (Loss), Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingAndMarketingExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Selling and marketing</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingAndMarketingExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Selling and Marketing Expense, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Research and development</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Research and Development Expense, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInConnectionWithThePIPE_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Series A Preferred Stock in connection with the PIPE</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInConnectionWithThePIPE_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Series A Preferred Stock in Connection with the PIPE</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInConnectionWithThePIPE_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of Series A Preferred Stock in connection with the PIPE.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInConnectionWithThePIPEInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of Series A Preferred Stock in connection with the PIPE (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInConnectionWithThePIPEInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of Series A Preferred Stock in Connection with the PIPE in Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfSeriesAPreferredStockInConnectionWithThePIPEInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of Series A Preferred Stock in connection with the PIPE in shares.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment of transaction costs related to issuance of common stock in connection with the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Repurchase of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from Operating Activities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENoteToSeriesAPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Notes to Series A Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENoteToSeriesAPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Note to Series A Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConversionOfPrePIPEBridgeAndPreFundedPIPENoteToSeriesAPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of Conversion of Pre-PIPE Bridge and Pre-Funded PIPE Notes to Series A Preferred Stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of common stock options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Stock Options Exercised</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of common stock options (in Shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from investing activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurements</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-cash interest expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Operating, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental disclosure of cash flow information</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Cash Flow Information [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from exercise of common stock options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Stock Options Exercised</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment and Geographic Information</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Stockholders' Equity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Depletion and Amortization, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of redeemable convertible preferred stock upon exercise of warrants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of redeemable convertible preferred stock upon exercise of warrant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfRedeemableConvertiblePreferredStockUponExerciseOfWarrant_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of redeemable convertible preferred stock upon exercise of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueEquityBasedPaymentsToNonEmployees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity-based payments to non-employees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueEquityBasedPaymentsToNonEmployees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Value Equity-Based Payments to Non-Employees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueEquityBasedPaymentsToNonEmployees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity-based payments to non-employees.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfCommonStockInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance of common stock in connection with the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_IssuanceOfCommonStockInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of issuance of common stock in connection with the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_OperatingLeaseRightofuseAssetsObtainedInExchangeForOperatingLeaseLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating lease right-of-use assets obtained in exchange for operating lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_OperatingLeaseRightofuseAssetsObtainedInExchangeForOperatingLeaseLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of operating lease right-of-use assets obtained in exchange for operating lease liabilities.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PropertyAndEquipmentObtainedForDepositsPaidIn2025_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property and equipment obtained for deposits paid in 2025</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PropertyAndEquipmentObtainedForDepositsPaidIn2025_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of property and equipment obtained for deposits paid in 2025</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityAccretionToRedemptionValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Series A Preferred Stock dividends and accretion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityAccretionToRedemptionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity, Accretion to Redemption Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDepositOtherAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Deposits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDepositOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Deposit Assets, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mezzanine Equity and Stockholders&#8217; Deficit</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in operating assets and liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Additions of property and equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from issuance of Series A Preferred Stock in connection with PIPE</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Preferred Stock and Preference Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments of long-term debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Long-Term Debt, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CostsDirectlyAttributableToTheMergerPaidIn2025_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Costs directly attributable to the Merger paid in 2025</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CostsDirectlyAttributableToTheMergerPaidIn2025_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Costs Directly Attributable to the Merger Paid in 2025</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CostsDirectlyAttributableToTheMergerPaidIn2025_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Costs directly attributable to the Merger paid in 2025.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxPaidFederalBeforeRefundReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxPaidFederalBeforeRefundReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Paid, Federal, before Refund Received</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization and Description of Business [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization and Description of Business</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sales of property and equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale of Property, Plant, and Equipment, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SignificantAccountingPoliciesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant Accounting Policies</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SignificantAccountingPoliciesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SignificantAccountingPoliciesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclourse of significant accounting policies.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_AmountOfImmediatelyPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance immediately prior to the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_AmountOfImmediatelyPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amount of immediately prior to the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_AmountOfImmediatelyPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Balance of immediately prior to the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SharesOfImmediatelyPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance immediately prior to the Merger (in shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SharesOfImmediatelyPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares of immediately prior to the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SharesOfImmediatelyPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Balances (Shares) of immediately prior to the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MergerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Merger [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue Recognition from Contracts with Customers</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenue from Contract with Customer [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Contract Balances</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Disaggregation of Revenue by Customer Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation of Revenue [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CommercialAndNonUSGovernmentCustomersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercial and non-U.S. government customers [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskCreditRisk_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentrations of Credit Risk</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskCreditRisk_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk, Credit Risk, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConvertibleDebtPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConvertibleDebtPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Debt [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConvertibleDebtPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure accounting policy of convertible debt.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WarrantsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WarrantsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure accounting policy of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisaggregationOfRevenueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation of Revenue [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisaggregationOfRevenueTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation of Revenue [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. government agencies [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US Government Corporations and Agencies Securities [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ContractLossProvisions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract loss provisions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ContractLossProvisions_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of contract loss provision.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred revenue</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract with Customer, Liability</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnbilledContractsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unbilled receivables</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnbilledContractsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unbilled Contracts Receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_NZ_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New Zealand [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_NZ_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NEW ZEALAND</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Information Net Sales and Property and Equipment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfNetProceedsFromTheMergerTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Net Proceeds from the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfNetProceedsFromTheMergerTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Net Proceeds From The Merger [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfNetProceedsFromTheMergerTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tabular disclosure of net proceeds from the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Company&#8217;s Fair Value Measurement Activity Using Unobservable Inputs and Associated Unrealized Losses (Gains)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CapitalizedTransactionCostsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capitalized Transaction Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CapitalizedTransactionCostsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Transaction Costs [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_CapitalizedTransactionCostsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The accounting disclosure for capitalized transaction costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RecentlyIssuedAccountingPronouncementsNotYetAdoptedPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recently Issued Accounting Pronouncements Not Yet Adopted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RecentlyIssuedAccountingPronouncementsNotYetAdoptedPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Recently Issued Accounting Pronouncements Not Yet Adopted [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RecentlyIssuedAccountingPronouncementsNotYetAdoptedPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The accounting disclosure for recently issued accounting.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assumptions Used in Determining Fair Value of Warrant Liabilities and Convertible Promissory Notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ReductionOfResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reduction of Research and Development Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ReductionOfResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of reduction in reduction in research and development expense.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restrictions on Cash and Cash Equivalents [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvertisingExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advertising Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ReverseRecapitalizationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reverse Recapitalization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ReverseRecapitalizationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reverse Recapitalization [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ReverseRecapitalizationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The entire disclosure for reverse recapitalization.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization and Description of Business [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Description of Organization and Business Operations [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_DescriptionofOrganizationandBusinessOperationsDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Description of Organization and Business Operations (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonClassBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Class B Ordinary Shares [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonClassBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Class B [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueApplicationOfTheExchangeRatioToStockholders_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Application of the exchange ratio to Legacy Merlin stockholders</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueApplicationOfTheExchangeRatioToStockholders_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock issued during period value application of the exchange ratio to stockholders</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueApplicationOfTheExchangeRatioToStockholders_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount represents application of the exchange ratio to legacy merlin stockholders.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesApplicationOfTheExchangeRatioToStockholders_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Application of the exchange ratio to Legacy Merlin stockholders (in shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesApplicationOfTheExchangeRatioToStockholders_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock issued during period shares application of the exchange ratio to stockholders</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesApplicationOfTheExchangeRatioToStockholders_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The shares represents application of the exchange ratio to legacy merlin stockholders.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueIssuanceOfCommonStockInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock in connection with the Merger to Inflection Point stockholders and rightsholders</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueIssuanceOfCommonStockInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock issued during period value issuance of common stock in connection with the merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodValueIssuanceOfCommonStockInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount represents issuance of common stock in connection with the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesIssuanceOfCommonStockInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock in connection with the Merger to Inflection Point stockholders and rightsholders (in shares)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesIssuanceOfCommonStockInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock issued during period shares issuance of common stock in connection with the merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockIssuedDuringPeriodSharesIssuanceOfCommonStockInConnectionWithTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The shares represents issuance of common stock in connection with the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ContractLossForProvision_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract loss for provision</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ContractLossForProvision_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount represents contract loss for provision.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PreferredStockPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PreferredStockPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PreferredStockPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The accounting disclosure for preferred stock.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Use of Estimates</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Use of Estimates, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_EmergingGrowthCompanyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Emerging Growth Company Status</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_EmergingGrowthCompanyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Emerging Growth Company Policy Text Block</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_EmergingGrowthCompanyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Emerging growth company.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesA1RedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A-1 redeemable convertible preferred stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesARedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A redeemable convertible preferred stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesB1RedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series B-1 redeemable convertible preferred stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesBRedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series B redeemable convertible preferred stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesSeedRedeemableConvertiblePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series Seed redeemable convertible preferred stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expiration Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right, Date from which Warrants or Rights Exercisable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Antidilutive Securities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Loss Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Basic and Diluted Net Loss Computations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandTwentyFourLSAConversionFeatureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 LSA Conversion Feature [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandTwentyFourLSAConversionFeatureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Four LSA Conversion Feature [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfRedemptionPriceAccruedValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of redemption price accrued value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfRedemptionPriceAccruedValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of redemption price accrued value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfPaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of paid in kind</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfPaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of paid in kind.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesAPreferredSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A Preferred Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SeriesAPreferredSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A Preferred Shares [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockOptionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock options [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_StockOptionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Options [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Three</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Loss Per Share [Tables]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective tax rates</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Income Tax Rate Reconciliation, Percent, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Uncertain tax liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_AfterFifthAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">After Fifth Anniversary [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Dilutive Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average discount rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Weighted Average Discount Rate, Percent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average remaining lease term (in years)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Weighted Average Remaining Lease Term</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term lease expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Lease, Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandTwentyOneLSAWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021 LSA Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandTwentyOneLSAWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty One LSA Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandTwentyFourLSAWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 LSA Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandTwentyFourLSAWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Four LSA Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_FourthAnniversaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fourth Anniversary [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Cash, cash equivalents, and restricted cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash and Cash Equivalent, Current, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightReasonForIssuingToNonemployees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Underlying Warrant Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightReasonForIssuingToNonemployees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant or Right, Reason for Issuance, Description</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandNineteenLSAWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2019 LSA Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoThousandNineteenLSAWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Nineteen LSA Warrants [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Components of Lease Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease, Cost [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Future Minimum Operating Lease Payments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease, Cost, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Weighted Average Exercise Price (Per Share), Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReportableSegmentAggregationBeforeOtherOperatingSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reportable Segment, Aggregation before Other Operating Segment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingInformationProfitLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Profit (Loss) [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_US_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_US_lbl" xlink:role="http://www.xbrl.org/2003/role/label">UNITED STATES</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PropertyAndEquipmentNetAndOperatingLeaseRightofuseAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property and equipment, net and operating lease right-of-use assets, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PropertyAndEquipmentNetAndOperatingLeaseRightofuseAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property and equipment, net and operating lease right-of-use assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PropertyAndEquipmentNetAndOperatingLeaseRightofuseAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property and equipment, net and operating lease right-of-use assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ClosingPIPEMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Closing PIPE [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted- Average Remaining Life (Years), Exercisable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate Intrinsic Value, Exercised</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Intrinsic value of options</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Options, Expired</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Options, Forfeited</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoOneLSAFirstTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021 LSA First Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoOneLSAFirstTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Zero Two One LSA First Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-current liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Noncurrent [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock Options [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Option [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoOneLSAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021 LSA [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoOneLSAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Zero Two One LSA [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PGF2022AgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">2022 PGF Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoFourLSAFirstTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 LSA First Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TwoZeroTwoFourLSAFirstTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Zero Two Four LSA First Tranche [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate principal amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Face Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment to reserve</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Commitment, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Borrowing amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Borrowings</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PreFundedPIPEMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pre-Funded PIPE [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PIPEBridgeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PIPE Bridge Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_NonemployeesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non-employees [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_GeneralAndAdministrativeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and administrative [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_SellingAndMarketingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Selling and marketing [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares are available for future grants</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ProceedsFromExchangeForCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from exchange for cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ProceedsFromExchangeForCash_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from exchange for cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk-free interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfCaseOfEmployeesHolding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of case of employees holding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PercentageOfCaseOfEmployeesHolding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of case of employees holding.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Capital Shares Reserved for Future Issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares of common stock are reserved</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unrecognized compensation expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputOptionVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Merger scenario - Stock price [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputOptionVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Equity volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputOptionVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Option Volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputPriceVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputPriceVolatilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Price Volatility [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk-free rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Risk Free Interest Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputSharePriceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Merger scenario - Expected Merger date [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputSharePriceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Share Price [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstandingMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants and Rights Outstanding, Maturity Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants and Rights Outstanding, Measurement Input</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Defined Contribution Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan [Text Block]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInAirValueOfWarrantsAfterTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of change in fair value of warrants after the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfWarrantsPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Fair Value of Warrants Prior to the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfWarrantsPriorToTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of change in fair value of warrants prior to the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ExchangeOfWarrantsInTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Exchange of warrants in the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ExchangeOfWarrantsInTheMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of exchange of warrants in the merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ExerciseOfWarrantsPriorToMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise of warrants prior to the Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ExerciseOfWarrantsPriorToMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Exercise of warrants prior to Merger</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ExerciseOfWarrantsPriorToMerger_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The amount of exercise of warrants prior to merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Mezzanine Equity and Stockholders&#8217; Deficit [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shareholders&#8217; Deficit [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockConvertibleConversionRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exchange ratio</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockConvertibleConversionRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Convertible, Conversion Ratio</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockConvertibleSharesIssuable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued after conversion</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockConvertibleSharesIssuable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Convertible, Shares Issuable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Mezzanine Equity and Stockholders&#8217; Deficit [Tables]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock, Class of Stock [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputProbabilityOfOccurrence_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement input probability of occurrence</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_MeasurementInputProbabilityOfOccurrence_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of occurred merger.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfConversionsOfStockTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Conversion Redeemable Preferred Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfConversionsOfStockTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Conversions of Stock [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-Based Compensation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock-Based Compensation [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WarrantsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">WARRANTS</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WarrantsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants Disclosure Text Block [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WarrantsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The entire disclosure of warrants.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TradingDay_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading day</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TradingDay_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Day</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_TradingDay_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Duration of trading day.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_VolumeWeightedAveragePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Volume-weighted average price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_VolumeWeightedAveragePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Volume-Weighted Average Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_VolumeWeightedAveragePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Duration of volume-weighted average price.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WarrantsDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants (Details) [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WarrantsDetailsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants (Details) Table [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Fair Value of The Stock-Based Awards</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Stock Option Activity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Activity [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RetroactiveApplicationOfRecapitalization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Option, Retroactive application of recapitalization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_RetroactiveApplicationOfRecapitalization_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Options, Retroactive application of recapitalization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ScheduleOfStockOptionActivityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Stock Option Activity [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WeightedAverageExercisePriceRetroactiveApplicationOfRecapitalization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Exercise Price, Retroactive application of recapitalization</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_WeightedAverageExercisePriceRetroactiveApplicationOfRecapitalization_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted Average Exercise Price, Retroactive application of recapitalization.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revision of Prior Period, Adjustment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FreshStartAdjustmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reorganization, Chapter 11 [Table]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfLoanCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepayment of 2024 LSA Loans</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfLoanCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Loan Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReorganizationChapter11LineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reorganization, Chapter 11 [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReorganizationChapter11PlanEffectAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reorganization, Chapter 11, Plan Effect Adjustment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReorganizationChapter11PredecessorBeforeAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reorganization, Chapter 11, Predecessor, before Adjustment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue Recognition from Contracts with Customers [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property and equipment, net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property And Equipment, Net and Operating Lease Right-Of-Use Assets, Net [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted- Average Remaining Life (Years), Outstanding</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price (Per Share), Exercised</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price (Per Share), Granted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_BenefitFromResearchAndDevelopmentAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Benefit from research and development agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfConvertiblePromissoryNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in fair value of convertible promissory notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfLongtermDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in fair value of long-term debt [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ChangeInFairValueOfWarrantLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in fair value of warrant liabilities [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_ConsultingAndProfessionalServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consulting and professional services [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_DepreciationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_FacilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Facilities [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_InterestExpensesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_InterestExpensesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest expenses [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_InterestIncomesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest income [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_InterestIncomesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest incomes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_OtherExpensesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other expenses [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_OtherExpensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other expense [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_OtherExpensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other expens [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="mrln_PersonnelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Personnel [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
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