A. 1. Restart the App: Close the UnitedMasters app completely by swiping it away from the app switcher. Then, reopen the app to see if the freezing issue persists. 2. Update the App: Go to the App Store, search for UnitedMasters, and check if there is an update available. If so, download and install it as updates often fix bugs and improve performance. 3. Clear Cache: Go to your iPhone settings, find UnitedMasters, and look for an option to clear cache or data. This can help resolve freezing issues caused by corrupted data.

B. 4. Reinstall the App: If the problem continues, uninstall the app by pressing and holding the app icon until it wiggles, then tap the 'X' to delete it. Reinstall it from the App Store.