ActionTiles is currently unavailable at the Google Play store. It will be coming back in Q2 2023.
The ActionTiles app for Amazon Fire OS works out of the box. There is no need to jailbreak or modify your Fire tablet in any way.
The latest APK files are available here (July 2023):
Android devices: ActionTilesAndroid-v6.2a.apk
Amazon Fire devices: ActionTilesFireOS-v6.2a-Fire.apk
The previous APK files are also available here:
Android devices: Android devices: ActionTilesAndroid-v6.1.30e.apk
Amazon Fire devices: ActionTilesFireOS-v6.1.30e-Fire.apk
Customer support service by UserEcho