Sonos Arc not showing on OH 3.1.0

I purchased a Sonos Arc + Sub but struggle to connect it to OH3. I added the binding and scanned for a new thing but it’s not being detected. Running in docker connected to host network. I tried to restart OH after installing the binding but that did not have any effect.

Any suggestions?

I wonder if my Unifi network is somehow interfering with uPnP, anyone else has this working on Unifi AP/Switch?