Roon on Tinkerboard does not show up after install

Hi from Germany!

I’m currently trying to install a Tinkerboard with DietPi and Roon. Downloaded the image, installed it and loaded the Roon bridge package. Everything went through, but I cannot see the unit in my Roon software. I’m using Ethernet, not Wifi and I have other clients running already.

Any idea what mistake I have made? Any idea how to test the system?

Thanks for help!

Best regards