I have been a happy Sonos customer since 2013. In the past few months I have been having intermittent issues getting music services to work. I've had more than my fair share of "cannot add to queue" and other errors of the like. This has been extremely frustrating. One sonos tech on the phone suggested my 6 year old bridge was failing - so I use a wired connection via my soundbar now. I'm still getting these issues connecting to music services.
The only fix has been to reset my router/gateway.
While I've read people say modems and cordless phones cause interference, I have had these devices next to my bridge for years and this issue has only started this summer. HELP! I paid thousands for all my speakers - this isn't acceptable.