I just reached tech support and was told in chat that Mycroft has NEVER been supported so I signed up for Deezer free family account to test drive. Same prices as spotify and a cursory look suggests at least my favorite artists are available.
I will pay for a service that connects to Mycroft.
I am a long time subscriber to Spotify (been a user ever since they started actually), but not supporting Mycroft could be the thing making me cancel the subscription, and maybe pay for another service instead.
The problem here is that Spotify cancelled the API that was working just fine before, so it's a deliberate action from their side
I' will give it a few weeks more since I know that people are looking into this at the moment, but if not solved it's bye Spotify for me.
+1 by another paying Spotify user. Hopefully Spotify will remedy this soon. If not, I'll cancel my subscription and subscribe with an alternative streaming audio provider. There is enough to choose from these days. Some cheaper and/or with higher quality even.