I use a new Kenwood Headunit which besides Android Auto also has the ability to use the Build In Spotify App to use via Bluetooth.
My Phone is the Samsung Note 8 and everything is Up to Date, also the Headunit.
The Phone connects via Bluetooth to the Headunit and provides me using the Headunit to take Calls and using Bluetooth Media to Stream the Audio on my Phone.
But when I want to use the Spotify App on the Headunit, the Spotify App shows "no connection". When I watch the Option Sliders/Switch for Bluetooth Connections (Calls, Media, etc) on my Phone, I cant turn on the Media Option. But when going back on the Headunit to Bluetooth Media, the Media Option on my Phone goes on. Switching back to the Spotify App on the Headunit, and its Off again.
I tried everything from clearing the Cache for Spotify on my Phone to restarting everything. I also disconnected the Phone a few times and also deleted my Phone on the Headunit and the Headunit on my Phone. I also gave it a few times, to maybe load things. I also conected it via Cable and started Spotify on my Phone to maybe load things.
This Problem is only when trying to use the Spotify App on the Headunit via Bluetooth. Android Auto and Spotify works great.
Hopefully someone can help me out.
Greetings from Germany.