Hello Arbter,
You have two possibilities to use Spotify. Either via the "Spotify" function in the menu, which rarely works for me. I don't know what the problem is, but my guess is that it's the mobile app. The second possibility is the normal Bluetooth connection. I only need that now because the "Spotify" function is unreliable. The only difference is that you don't see the album pictures and can't access your playlists. The playlists in Spotify mode can only be run randomly anyway and you can't search for songs, so it's useless for me anyway because I like to listen to the latest songs. The phone is always connected automatically via Bluetooth and the last Spotify playback is also started, as long as the phone app has not been closed in the background.

In summary: Spotify mode exists, but it doesn't work reliably and you don't need it because the normal Bluetooth mode works great and you don't gain anything useful with Spotify mode anyway. You just have to start the first song on the mobile phone at the beginning, then you can go forwards/backwards either via the steering wheel remote control or the touchscreen.

Hope that helps.