Seems to be a fairly common issue. Incidentally one I have also just realised my Roam seems to be suffering from. I think contacting support is the only real way forward.

Thanks, I really like the Roam, but if I can’t get it going I hesitate to buy another one.

Not sure I understand. Nothing in @Kristoffer Peterhänsel ‘s response suggested purchasing another. Merely contacting Sonos Support directly to discuss the issue, and potentially get a resolution. 

All I meant was if support couldn’t help me, I’d hesitate to buy another.  But I did contact support, they were unable to help me get it going since I had already tried everything they suggested.  However, the support team is fantastic because even though my warranty expired a couple of years ago, they are sending me a new Roam.  I just have to return the one I have, which is no problem because they also sent a prepaid label - all I have to do is take it to UPS.

It means a great deal to consumers to have a product that has excellent customer service and Sonos definitely has that going for them.