Same problem - updated today NUC 7i7BNH and can’t connect any longer. sorted this out by doing a recovery of Roon OS version 1.0 build 219. Did the bios update as well.
Can you try downloading the latest build of ROCK from our website and run the recovery procedure from that version? After doing so are you able to successfully run ROCK on the new version?
I’ve done that - still can’t run the new build. Thinking of getting a new NUC as this one (a couple of years old) is running extremely hot (since the last few days).