Android
If you see only a white screen when launching the app, you can try the following to fix the problem.
Variant 1 "Reinstall Android System Webview":
1. Close the PlayerPlus app.
2. Go to the Play Store app -> search for "Android System Webview" -> uninstall this app.
3. Go back to the Play Store app -> search for "Android System Webview" -> reinstall the app.
4. After that you have to restart your phone
Variant 2 "Clear Cache":
1. Close the PlayerPlus app
2. Go to the settings of your cell phone and go to "Apps".
3. Go to the app "Google Play Service" -> click on "Memory" -> click on "Clear Cache".
4. Go to the app "Android System WebView" -> go to "Memory" -> go to "Clear Cache".
5. Go to the app "PlayerPlus" -> click on "Memory" -> click on "Clear data".
6. After that you have to restart your phone