Hey, dshokouhi - thanks so much for the update! The solution to my problem was actually easier than your idea. Before pulling the APK from the actions tab I just downloaded the Home Assistant app from the Play Store (Aurora Store, technically) and went through the first install wizard. Where it used to fail (after inputting user/password) there was a new “Skip” button. I had to consent to missing out on Location-based stuff (don’t use that anyway) and the app started working!
Thanks for responding to this issue. The app is working great now!