Seeing the identical failure on our team (Team 5FSJ73AXHD), app com.stillstandingstudios.examineTheScriptures — same AKAuthenticationError -7003 / ASAuthorizationError 1001 ("Sign Up Not Completed"), thrown right after Face ID succeeds. We've verified the same things you have: Sign in with Apple enabled on the App ID as primary with an empty Server-to-Server endpoint; com.apple.developer.applesignin present in the entitlements and granted in the embedded provisioning profile (confirmed on both debug and TestFlight release builds); 2FA on; no pending agreements. Google and email/password sign-in work fine in the same build, and it fails identically on debug and TestFlight. Adding a +1, and happy to share our Team ID and a .logarchive with Apple via DTS. Has anyone from DTS been able to look at a team's Sign in with Apple provisioning state? This looks entirely server-side.