5 rooms full of reviously working sonos gear.

Music is playing, neither sonos or spotify can see or control the audio flow.  Volume controls snap back, room joins fail, starting new music fails.

Un-installed and reinstalled sonos on Android.  Rebooted.  Spotify can't connect to speakers, nor affect audio levels.  Once I was able, with one room disconnected, to start another song, but nothing snapped back to normal.  Worked fine yesterday.  Nothing on wifi / LAN changed.

Events suspected to cause issue: samsung TV switched audio from sonos bar (mute, which caused all music to stop) to BT headphones. Umpaused sonos, music continued.  Timeline resumes above.

Additionally, changing between 2 wifi systems at two locations, with same ssid and pw, confuses the app, takes 5 seconds to figure out where it is, and let me see the devices.