Hi!
I just recognized, that Sonos App 15.3 is not any more able to connect to Apple Music and Amazon Prime services.
I deleted the App from my phone (iOS 16.4.1(a)) and re-installed it. Connection to the services is still broken, in addition I get a prompt asking me to logion to enable some new features. Login (to my Sonos account?) fails as well, and I just can keep trying, but have to force quit the app to return to using it.
On my Mac the Sonos App continues to work properly in all regards. So I assume, that to has sth to do with the App.