I recently submitted my app for review via App Store Connect. Apple is rejecting my release because the “Continue with Apple” button doesn’t meet its design standards. Here is the message from Apple:
The app offers Sign in with Apple as a login option but does not follow the design and user experience requirements for Sign in with Apple. Specifically, Sign in with Apple button includes logo artwork that is not downloaded from Apple Design Resources.
These requirements provide the consistent experience users expect when using Sign In with Apple to authenticate or log in to an account.