For whatever reason the rooExtend box was not visible anymore in Roon as endpoint. I restarted the box once and ended up with a fast flashing red light. I tried a firmware using another memory card that I got a while ago after another problem. The box is up and running again and I can access it again from the web browser. It is now running rooExtend release: v3.0.0.
I am still not able to see the box in Roon as endpoint. Any way to fix this?