Sign up not completed when I log to an app using apple id. What should i do?
For the "Sign Up Not Completed" error, please submit a bug report via Feedback Assistant:
Gathering required information for troubleshooting Sign in with Apple authorization and token requests
https://developer.apple.com/forums/thread/801173
Remember to include your Team ID, Client ID/Services ID, affected user ID/email, and sysdiagnose logs. Once submitted, please reply with your Feedback ID.
Cheers,
Paris X Pinkney | WWDR | DTS Engineer