Dear Developer,
We identified one or more issues with a recent delivery for your app, "AisleGo Weddings" 2.1.8 (6). Please correct the following issues, then upload again.
ITMS-90338: Non-public API usage - The app references non-public selectors in AisleGo: _isKeyDown, _modifiedInput, _modifierFlags. If method names in your source code match the private Apple APIs listed above, altering your method names will help prevent this app from being flagged in future submissions. In addition, note that one or more of the above APIs may be located in a static library that was included with your app. If so, they must be removed. For further information, visit the Technical Support Information at http://developer.apple.com/support/technical/
Best regards,
The App Store Team
We already have our application production, nothing changed this time, now changed dev REST APIs endpoint to Prod and uploading on the test flight for App store release but getting this error upon test flight.