Dots not showing in spotify

[FYB]

Hi, I think it was around 20th Feb my dots stopped showing on my Spotify speakers list. I've reinstalled both apps, looked for spotify files in internal storage, turned router and all dots off and on.
Alexa will play spotify on my sonny's speakers when asked. When asked to pay on themselves they say 'playing spotify' then nothing...

[FYB]

*SONOS not Sonny's!  

[FYB]

Sorry, more to add.  I've unlinked and relinked and toggled the local speakers option.