I have gone ahead and enabled diagnostics mode for your account and what this action will do is next time your Roon Server is active, a set of logs will automatically be generated and uploaded to our servers for analysis.
For some reason it is not reaching our servers, even after I tried re-enabling diagnostics on your account. I also ran a quick test and I was able to submit a similar report from my setup here, so something else is going on.
So we can move forward, I was hoping for now you could use the directions found here and send them to our Logs Uploader Service and let us know after, thanks!
As a next step, lets reset the network settings on the Nucleus. Steps to follow below:
Connect the Nucleus to a monitor or TV via HDMI.
Connect a USB keyboard to the Nucleus.
Power on the Nucleus and let it boot.
Press ENTER
Type resetnetwork
Press ENTER
Take a photo of what are you seeing on the screen and upload it here.
Let me know if you’re able to connect afterward. Thanks!