If you see the following screen during the setup progress. 

  • Go into the car's head unit in the phone settings and delete every device listed in "mirror screen". Every phone, previous devices, etc.

          And on your phone, go into Settings, Apps, and for AAWireless, Android Auto, & Google Play                         Services tap on Storage then clear the cache and delete data. All this does is delete anything for                   these apps - like you just installed them. Reconnect and run through AAWireless setup again.

  • Have the "wireless Android Auto" enabled in the Android Auto settings. Also enable "add wireless projection to settings" from Android Auto developer settings(you can access it by tapping the version of AA 10 times, after that tap the 3 dots in the top-right corner and you should see "developer settings".Also please have no active VPN and one user profile on the phone.AND be sure in AA settings in the "previously connected cars" to have enabled "Add new cars to Android Auto".enable "request video focus on startup" from android auto developer settings.
  • If it still does not start, try all USB modes with and without having "Passthrough" enabled
  • check to not have the AA and the apps used by it into battery optimization in your phone settings.

            If after above procedure you are still facing issues please open a new ticket for support.