Short answer: your app lets people sign in with Google (or Facebook, GitHub, X) but doesn't offer a login option that keeps their data private. Apple's Guideline 4.8 says that if you offer a third-party login, you must also offer one that limits what you collect. Sign in with Apple is the quickest way to meet it, and for apps built with Lovable, Bolt, Base44 or v0 it usually takes an afternoon.

AI app builders make it easy to add "Continue with Google". It works on the web, so nobody thinks about it again until the App Store review note arrives:

Guideline 4.8 - Design - Login Services

Nothing in your app is broken.…