We here, plus at least one client, are experiencing an issue where we cannot playback a set of files purchased from Qobuz through UPnP. The files show up, and Mosaic seems to load the first file, but playback does not start. Playback is possible through Services -> Qobuz -> Purchases -> Albums -> , but, what would happen if the Qobuz subscription was not renewed? Would the Qobuz section appear with Purchases playable even if there were no longer valid credentials for a Qobuz account?
The album files play in Roon, by the way.