I have 4 zones/rooms, and I cannot consistently switch between rooms using either the iOS app or the PC app. As a 10 year Sonos user, this basic functionality is clear to me but after power cycling the router, waiting overnight and then trying to play in a specific room, the music will continue to play in the former room that I have unchecked and won’t change over to the different room.
The zones/rooms are not dropped, they are visible in all apps.
I run S1 with a legacy Play5, a legacy Connect:AMP, a new Amp and a supported old Connect:AMP, with the amplifiers powering only 1 pair of speakers.