Guideline 2.3.6
Incorrect age rating
App's age rating doesn't match its content. Often happens when apps with user-generated content, violence, or mature themes select too low an age rating.
8 cases reported · ~2 days to resolve
Apple's rejection message
Guideline 2.3.6 - Performance - Accurate Metadata: Your app's age rating is not appropriate for the content it includes. The app content requires a higher age rating.
How to fix this
Re-answer age rating questionnaire accurately
easyWorked for 98%
Go through the Content Descriptions questionnaire in App Store Connect and answer truthfully. If your app has UGC, you likely need 17+. If it has cartoon violence, at least 12+.