Sonos is aware of the problem:

I read the thread but did not see that. Thanks!!

There’s at least a dozen (I’m sure more) threads on this topic for at least 6 months and still no word for Sonos. Considering there are only a couple of Dolby Atmos music providers with a great selection for a fair price, this is starting to feel like a conflict of interest with Sonos’ own music stream service. “Oh geez, we’re sorry our competitor’s music app isn’t working. Here, try ours instead.” - Sonos