So my sonos playlists keep randomly disappearing for days then reappearing. Then having got fed up today I did a lot of googling and found a workaround in this forum. This happens at the same time on all control remotes - 2 iPhones and 2 iPads.
I followed the suggestion of going for sonos radio, learn more - just on one remote app. Then go back to home Menlo and behold all playlists appeared on ALL devices!!!!
I have a sonos 3 as my control direct connect device….
clearly a ‘hub’ software problem. Been there for more than 2 years now…
please read this and figure it out please.