I use Amazon Music as the main source of music. I have a Move in the kitchen, another Move in Living Room, a connect amp with legacy speakers and a Sonos Roam.
I go to play music in the Kitchen - nowhere else - when i get a message that Amazon is playing on another room. Nothing is playing elsewhere but cant get the speaker to play the queue. As there is nothing playing elsewhere there is nothing to turn off. I usually play Sonos Radio for 5 mins then return to the Amazon queue and it plays normally.
I have re-authorized my Amazon account but nothing seems to solve the problem. This issue arises every few days on a random basis.