https://status.sonos.com/
 

Of course, I’m not sure if they posted this as a result of your comment, or before ;)

SiriusXM Canada app is back now. But the Sonos connection is still offline. 

SiriusXM Canada back on Sonos app now but still showing offline on status page. 

Note that SiriusXM uses different servers for Sonos than they do for other streams .

I would expect Sonos wants to check to ensure everything is back to normal everywhere, before they flip the status page back. It is possible that locally, it’s fine for you, but others may still be having issues.