I’d certainly try a reboot of your router, followed by a reboot of your speakers.

I’d also double check that your address is set properly in the account settings at www.sonos.com

If none of that works, however, I would call Sonos Support directly to discuss it.

When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your Sonos system and network.

Note there is an ongoing Spotify issue at the moment. See here:

https://status.sonos.com/

Thanks, @Ken_Griffiths , I tend to dismiss that pop up fairly quickly, without really ‘processing’ it ;)