Over the past three weeks or so voice control of my Sonos Move has become erratic.   I have already worked with the tech support desk via chat to disable/enable Alexa and some of the music services.   Normally after a reboot everything works great.   At some time later, saying “Alexa stop.” doesn’t work.   A command to play a channel or music in Amazon is successfully repeated by Alexa, but the action doesn’t take place.  If I go to my Beam and tell Alexa to play X on the Sonos Move that seems to work.  The Play5s, Beam, and Sub work great in my office and don’t seem to have this issue.