Application Won't Install Correctly

[Davy49]

Hi, I recently purchased a new amazon fire 7" tablet ( 9th generation), I've already got the four main needed google services installed/running on my tablet. I've got the play store, chrome browser,etc.working correctly. This morning I downloaded/installed the latest apk of this application, but so far I can't seem to get it to function correctly. When I go into settings under accessibility, I do see the home page option listed there, but I'm not allowed to change any setting. Then I receive a prompt that says "this application is not compatible with your device" . Hopefully, I can get this application working so I can use my desired launcher.