Try the following solutions to fix the issues associated with RetroArch on Android TV Box. 1. Clear the cache data of the RetroArch app. 2. Force close the RetroArch app and then use it after a few minutes. 3. Restart your Android TV and check whether the app is working. 4. Uninstall the RetroArch app and sideload the latest version of the RetroArch apk on Android TV.