Sign in with Apple is failing for every user, on every device, for our live App Store app. Each attempt fails inside Apple's native sign-in sheet with the error "Sign-Up Not Completed" — before any of our code runs (no ASAuthorizationController delegate callback is reached).
Environment / identifiers:
- Bundle ID: online.framenet.app
- Team ID: 5F2256QJNT
- App Store app: FrameNet, App ID 6799345029 (approved and live as of Aug 24, 2026)
Timeline:
- Last worked: Aug 8, 2026
- Failing on every attempt since: Aug 14, 2026, across builds 12–16
- Our sign-in code is unchanged between the working and failing period
Already verified / attempted on our side:
- Sign in with Apple entitlement is present in the signed builds (confirmed via codesign entitlement dump)
- Capability is enabled on the App ID in Certificates, Identifiers & Profiles
- Provisioning profile is valid and includes the capability
- Removed and re-added the Sign in with Apple capability and regenerated the provisioning profile on Aug 17 — no change
- Google Sign-In in the same app works normally, so networking and the rest of the auth stack are fine
- Reproduced on multiple physical devices and Apple IDs
Because the failure occurs inside Apple's own sign-in sheet before our code executes, this appears to be a server-side state problem with Sign in with Apple for our App ID, and nothing we change client-side has any effect. We were forced to ship v1.0 with Sign in with Apple disabled.
A Developer Support case is already open for this: case 20000140460775. A screen recording and full environment details have been provided in that case.
Has anyone from Apple seen this "Sign-Up Not Completed" state, and can engineering inspect/repair the server-side Sign in with Apple configuration for this App ID?