Next problem: when I tried to go back to the launcher by using back buttons it didn’t really work. The Zwift login screen was spinning (I guess because I was holding the tablet in portrait mode at this time) and it didn’t react to the back button.
By the way: just out of pure curiosity I tried the Zwift app on my XiaoMi MiMix2 and everything worked just fine. It’s just that the screen is that bit too small to really enjoy zwifting on it.
Same on my Mi Pad 4, 3GB RAM version (Qualcomm Snapdragon 660, Adreno 512 GPU). Black screen, except for UI items - previously sometimes it was all red instead of black.
I did test it previously on my Nokia 6.1 (Qualcomm Snapdragon 630, Adreno 508 GPU), where it worked fine. But agreed, the phone screen is just a bit too small.