I am using Sonore UPnP Bridge on an Audiostore Mite and have discovered a problem which I can reproduce. I know this is not Sonore hardware, but the software is the same I believe?
Anyway, first, play some music with Roon to the Bridge. Next go into DSP settings in Roon. Then enable Parametric EQ and start very quickly changing settings. I turn bands on and off. You need to do it quicker than Roon can catch up with so that you make multiple changes before the music starts again.
Eventually Roon will just continuously skip tracks and the music will never start again. If you look at the endpoints in Roon the Bridge will have disappeared.
To fix, the Bridge must be restarted. No need to restart Roon Core as it will recover.