Homematic device added by serial-number (HM-PB-2-WM55-2) not visible

Hello!
I added a HM-PB-2-WM55-2 (NOT IP) via serial-number to Homematic (Open-CCU). It works fine in Homematic.
This new device gets not visible in HA, even after reloading the integration.
Is this an issue or exists a solution/workaround?

Michael