I have to restart my computer, or at least Gizmo, to get rid of the "error communicating with server".
Sometimes, after electricity problem, or restart router, sometimes for no reason. When other apps, all communication works always, like between Denon amplifier and the phone app.
That computer is used only for playing audio files, and is not accessible easy.
I have for a long time construction noise, and the only thing I can do, is put music on. So every time, I have to restart everything, because communication between Gizmo and Android phone is not optimal.