Audio zones lost.

[avta]

Had the same problem here although I use an iMac as source. I knew there was a problem getting the Devialet online because I was unable to use the Devialet iPhone app. I had been using Roon Ready previously with no problems. I did all manner of things including removing and reattaching the antenna on the Devialet, turning off the firewall on the Mac, allowing Roon Full Access to my computer( a security setting ), resetting modem, router and Devialet ( unplugged from wall ). All of a sudden I saw that the Devialet's wireless connection appeared in the Mac Network via the Airport Utility. It appeared as a Roon Ready Speaker. No idea why. I selected it and the utility closed and from there on I've been using Roon Ready. Also, the sound quality is much better than before all these maneuvers. No idea why. I hope this helps you. My conclusion from all this was that my computer was not allowing the Devialet to access the network although I'm not sure why. Maybe some other more knowledgeable people on the forum would have some ideas.
Regards,
Guy