A. 1. Restart the app: Close the app completely and reopen it to see if the issue resolves. 2. Update the app: Check the App Store for any available updates for the Greene King app, as updates often fix bugs and improve functionality. 3. Clear app cache: If the app allows it, clear the cache to improve performance. 4. Restart your device: Sometimes, restarting your iPhone can resolve app issues. 5. Reinstall the app: If problems persist, delete the app and reinstall it from the App Store.