Hi, have used spotify with my Heos HS2 for about a week. Spotify is on my Android phone. One day Spotify struggled to connect to Heos, I had to retry several times.
Next day it would not connect at all. Finally, it no longer even "sees" Heos!!!
I have uninstalled and reinstalled both Heos and Spotify on my phone, I have restarted both devices several times, and no change, Spotify no longer sees Heos.