During April 2025, Iwarp focused on backend development for the lnbits/lnbits repository, addressing reliability issues in payment processing. Using Python, they improved the integration with the lndrest API by explicitly converting fee_msat values from strings to integers, which resolved type-mismatch errors during payment status updates. They also normalized fee reserve calculations by ensuring absolute values, preventing negative reserves and supporting accurate fee reporting. These targeted bug fixes enhanced the stability and resilience of numeric data handling within the system. Iwarp’s work reduced runtime errors and edge-case failures, resulting in more reliable payment flows for merchants and users.