We use Sonos to play a couple of radio stations most of the day - the kitchen & lounge have one station which is on an alarm to start every morning - and I have another in my office.
When going to bed, i would tell Alexa to 'Stop' and if one room had Sonos playing it would stop, if more than one room she would ask which one, and i'd go through them, stopping each in turn.
Over the last few days she's stopped responding to the phrase 'Stop'. The blue light goes round so she heard it - but nothing happens, so I have to open the sonos app & stop them.
Any ideas ?