If you are facing the Black Screen problem in Tank Star app, then it might be a temporary loading issue most of the times.
You have to follow all the instructions carefully to get rid of this problem.
1. You will need to go to your mobile phone’s settings.
2. And open up the Apps settings.
3. Then you have to open the Tank Stars app settings.
4. Click on Clear data.
5. And then click on Clear cache.
6. After that, navigate to the About Phone settings.
7. Go to storage.
8. Enter into clear Cached data and then press OK.
9. After that, open the Google Play Store & update it if required.
10. Finally reboot the device to check if the error is resolved.