A. 1. Clear the app cache: Go to your device's Settings > Apps > Roku App > Storage > Clear Cache. This can help resolve issues caused by corrupted cache data. 2. Restart your device: Sometimes, a simple restart can fix app opening issues. Hold the power button and select Restart. 3. Reinstall the app: Uninstall the Roku app and then reinstall it from the Google Play Store. This can help if the app files are corrupted.