What would they be expected to say? If you use AIR the streaming works perfectly , if you use Roon Ready it doesn’t and you get failure to load, and quiet patches in songs. Unless I have misunderstood Danny’s message at the start of the Roon Ready Cerification for Devialet posts then it is not released until Roon are 100% satisfied that it works correctly.
Which it does not. SO from my viewpoint this is a Roon problem.