Hmmm. I’m not able to EDIT my above comment. Maybe it times out; yes it does time out. And no way to delete a comment. Anyhow, in the latest Sonos app, if I tap on Settings, it shows my Move 2 speaker. But tapping on + (Add speaker) doesn’t find my Beam. So I went through the back door. In Settings, I went to Network, Manage Networks, Update Networks, and in there I found I could confirm the two products on the network: the new Roam 2 and the older Beam Gen 2. A snag though: from the Sonos app I can cast Spotify or YouTube Music to the Roam 2 but NOT the Beam. From the Spotify app I can pick either the Move 2 or the Beam. Weird.

That is certainly unusual. 

I would recommend that you submit a system diagnostic within 10 minutes of recreating this problem, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here, they get sensitive about GDPR.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

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

Thanks Bruce, appreciate your reply. After Memorial Day (which is today) I'll run the diagnostics as per your kind suggestion, and then contact support. I'll come back here with a follow up. I stand in great admiration and appreciation of the valiant souls who gave their lives for America or became disabled.  

Raja