I used to be able to play the android app on my desktop using the Windows Subsystem for Android, now the game tells me there is an update available, but in the Amazon app store, there isn't one. So I can't play that way anymore...
If you want to play the Android app on your desktop, you can do so via Bluestacks or Nox (two popular Android emulators for Windows). Both Bluestacks and Nox get their Android app updates from the Google Play Store, not the Amazon appstore. The newest version of the WGT app is available now in the Google Play Store.
Just curious... what is the Windows Subsystem for Android, and what advantages would that have over using Bluestacks or Nox?