Same signature here, with the same result after verifying every client-side item in this thread. Filed as FB25121592. Team ID: ZW629DHDY3 (Organization). Bundle ID: com.vedlego.app (explicit App ID, Sign In with Apple enabled as primary App ID). Build: TestFlight 1.0.0 (11). Signed binary entitlement com.apple.developer.applesignin = ["Default"]; the embedded App Store profile includes it; the Program License Agreement is accepted. Device: iPhone 15 Pro Max, iOS 26.5.2, Apple ID with 2FA. Sign in with Apple works in other third-party apps on the same device. Failure: 2026-10-09 10:23:58 UTC. Face ID succeeds, then the sheet shows "Sign-Up Not Completed"; no credential returned. akd log during the attempt: Encountered error while fetching developer team: Error Domain=AKSQLError Code=-6003 No applications were found with the provided Client ID: AppleIDAuthSupport: setError: 2:M2 missing (bad password) SRP authentication with server failed! Error Domain=com.apple.AppleIDAuthSupport Code=2 AKRemoteViewController did complete with authorization (null) ... NSUnderlyingError Domain=AKAuthenticationServerError Code=-24000 The code-level support form will not accept the request without a focused Xcode test project, so we are posting here as the other affected teams did. If a DTS engineer can check the Sign in with Apple registration for Team ZW629DHDY3 / com.vedlego.app on the backend, we would be grateful. We can collect a sysdiagnose if requested.