My tvOS app already uses the Square SDK, but every attempt to charge a card returns a transaction error even though the same code path works on iOS. I need someone who really understands Square’s In-App Payments SDK and tvOS quirks to step into the existing Xcode project, trace the failure, and push a clean, working fix. You will receive a TestFlight build, sandbox credentials and the current repo. Once you pinpoint the problem—whether it’s callback handling, token creation, certificate configuration, or something deeper in the tvOS entitlement—you’ll update the code, rebuild, and demonstrate a successful end-to-end purchase in the Square dashboard. Acceptance criteria • Transactions complete without errors in both sandbox and production modes. • No new crashes, memory leaks, or App Store guideline violations. • A concise changelog and any Square dashboard settings I must replicate in production. When you apply, please only include past work that shows you’ve repaired or implemented payment flows (Square experience on tvOS is a big plus). No need for a long proposal—results speak louder.