ChessUp App for Kindle Fire

Is this in the works? I’d like to use a device other than my phone so I can use it for other things, e.g. use the camera, text, etc.

I have a Kindle Fire HD 10 Plus and it’s set up with Play Store so I can use Android apps, but it says the ChessUp app isn’t compatible with my device. I even have an older android phone but also not compatible.

The minimum Android Version for android is 9.
Maybe older Versions?