Missing Sign in with Apple
App uses third-party social login (Google, Facebook, etc.) but does not offer Sign in with Apple as an option. Required since iOS 13 for apps with any third-party login.
17 cases reported · ~5 days to resolve · 100% appeal success
Apple's rejection message
Guideline 4.8 - Design - Sign in with Apple: Your app uses a third-party login service but does not offer Sign in with Apple. Apps that use a third-party login service for primary authentication must also offer Sign in with Apple.