Same issue here — new App ID not recognized by the auth backend. Team ID: 59NYXF3PWY Bundle ID: com.ara.zelosa Feedback: FB24199527 akd log confirms the same signature as others in this thread: AKSQLError Code=-6003 → "No applications were found with the provided Client ID: com.ara.zelosa" → AKAuthenticationError -7003 → "Sign-Up Not Completed" in the sheet. Entitlements verified present in both the signed binary and embedded provisioning profile of the distributed IPA. Same Apple ID works with Sign in with Apple in other apps. We were rejected in App Review (Guideline 2.1(a)) because of this. Would appreciate a backend fix — thank you.