Stephan-P I can make the screenshot guide tonight or tomorrow but I realized I made a mistake on Step 2. It should have been:
- Enabling AA Developer Settings
Settings ➔ Apps ➔ Sandboxed Google Play ➔ Android Auto ➔ Android Auto settings (very first option)
If you scroll all the way to the bottom you'll see "Version". Click on it 10 times. (After the first click it should change to "Version and permission info"). This will enable "Developer Settings".
Let me know if this solves your problem. Otherwise, I'll do my best to post the screenshot guide as soon as I have a little more time.