Same signature here, filed as FB24555833 (2026-08-28). Team D378298BB5, primary App IDs com.dozeling.babymonitor (App Store Connect app 6806311606, TestFlight 2.19.1 (33)) and app.pestka (capability enabled 2026-08-23) — both fail identically on iPad (10th gen) iPadOS 26.6 and iPhone 12 Pro Max iOS 26.6 with the native sheet showing "Sign-Up not completed" right after successful Face ID/Touch ID consent; the app receives neither a credential nor an ASAuthorizationError. akd trace: AKAuthorizationStore lookup (AKSQLError -6003, first sign-up, local) → sheet → biometric OK → No password, but CK is available → SRP → AppleIDAuthSupport: setError: 2:M2 missing (bad password) → SRP authentication with server failed Code=2 → AKAuthenticationError -7003. Ruled out: entitlement com.apple.developer.applesignin = [Default] in the signed binary and both profiles, PRIMARY_APP_CONSENT via API and portal, regenerated profiles, no Services IDs / wildcard overlap, agreements active, System Status clean, Apple ID signed out/in on device. Control: the same Apple ID completes Sign in with Apple in another team's app (LEGO Builder) on the same iPad — so the account and device are fine and the failure is specific to this team's apps. Traces attached to the FB. Happy to provide sysdiagnose with the Accounts/AuthKit profile if needed.