Ensure that you are running the latest version of the JGMFut X Melon app. You can check for updates by visiting the App Store and searching for the app.

The app must be deleted. Download the newly updated profile fix or use a personal Apple ID via AltStore. Network restriction or corrupted cache.

: This means Apple has revoked the app certificate. If you used AltStore, connect your phone to your PC and click Refresh All inside the AltStore app. If you used a web link, you must delete the app and reinstall a newly updated version.

Works on the latest iOS 18/19 (if applicable in 2026).