Hi @Buganvilla
Welcome to the Sonos Community!
Sorry to hear of this issue you are having with your Spotify Connect functionality on Sonos.
Please try removing your Spotify account(s) from Sonos, then add them back on again:
Remove a music service account from Sonos
Add a music service to Sonos
It may also help to sign out and back into the Spotify app.
If the issue persists, please try a reset of the Sonos app: User icon » App Preferences » Reset App » Reset. Once done, re-open the app and opt to connect to an existing system.
Finally, I recommend you get in touch with our technical support team who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports.
I hope this helps.