No Reactors anymore following last app (1.11) update.

[avta]

I have had trouble with UPnP, but resetting to factory settings and recreating the stereo pair seemed to address it. 

I think it’s related to the network name they are given v. what they call themselves...  if you separate the stereo pair, do they behave normally during UPnP (ie. are they quick to be discovered by your app)?  I found that finding a pair is much more finicky than a single device, suggesting an app issue.

I’ve had no trouble with UPNP. Using the Devialet app both units connect in stereo immediately. Not sure what you mean by “ the name they are given v what they call themselves. “ it’s possible some of the difficulties you’ve had might be internet issues.