Not been able to install CQ4you or CQ-mixpad on my Android device (redmi 9c phone). “Google play” says my phone isn’t compatible with the CQ apps. But my phone is Android 10 and CQ apps requirement is Android 6 and more.
I had the same problem with a brand new tablet (Android 11). It also has to be 64 bit operating system vs 32 bit. Have since learned that if there is less that 4gb RAM it is likely 32 bit – Good Luck