I'm new to this forum so I hope I haven't overseen the same topic..
I have a Sonos playbar (connected via LAN) a Sub and two Sonos One speakers which I use a a home theater. Everything worked fine untill two or three months ago. (Nothing changed in my household). Almost every day the app doesn't recognize the sub and rear speakers (two Sonos One), only shows question marks. Also I can't access Spotify anymore through the Sonos App when that happens. The only workaround is to reinstall the app and restart my Router. Everything works perfect again for a day and all of a sudden the error occurs. I'm not sure if this is related to App Issues (I've read some comments about that) or if any of my settings is buggy.
Thanks for your Help!