Map is black on companion app -Android

I have a new Unidigi F1 phone with Android 9. It has a Helio P70 from MediaTek. The GPU is a Mali-G72. My problem is that when I launch the companion app the “Game” map appear mostly black. I can see faint moving items but that’s it. All the other features appear normal. The Zwift application has no graphic issues that I can see.

Hey John, thanks for writing in! Do you still get a black screen when you uninstall then reinstall the companion app?

Yes it’s still black. It’s not solid black.I can see the various riders as faint gray dots.