Homematic Addon with HB-RF-ETH

Hello and good evening,

I am new in the matter and please need help. I installed Home Assistant on an Intel NUC. Everything is going perfectly. Now I would like to integrate my complete Homematic (Rasperrymatic) with Addon on Home Assistant. I use an HM-RF ETH. The circuit board can be reached via webui. If I have installed the Rasperrymatic Addon, the system does not find the board and therefore there is no device in the inbox. What could I do wrong? Please help.

Access your Raspberrymatic UI and in Control Panel, Advanced settings, add the IP of the HB-RF-ETH.