"Your device isn't compatible with this version"

Hello, I've been using KWGT for years now, and I absolutely love it on my phone. However, I recently purchased a Fire HD 10 (2021) tablet and receive the "Your device isn't compatible with this version" when trying to download KWGT. I've paid for the pro version of this, and would really love to be able to use it on my tablet. Is this an issue of it simply being a tablet, or an issue of these running an older version of Android (Android 9, API Level 28)

If it's the latter, is it possible for me to download an older version of KWGT and get it to install and run properly? Or if sideloading KWGT, would it be possible that it might actually run just fine on this?

And which version of KWGT, if I could sideload it, would run properly on Android 9?

I'm currently running my Fire HD 10 with Nova Launcher, so running KWGT should work just fine even if the default Fire Launcher wouldn't.

If so, where could I find the APK for KWGT? Because I'm able to download the PRO installer just fine from the Play Store, but KWGT does not allow me to download.