Hass.io and CCU3/Homematic devices do not show up

Hi, i am trying to connect my Homematic CCU3 with Hass.io. I can see the CCU3 inside Home Assistant, but it only shows me some weird sysvars from the CCU - no devices are showing up.
This is my configuration:

homematic:
interfaces:
hmrf:
host: 192.168.1.25
resolvenames: json
port: 2001
username: Admin
password: xx
hmip:
host: 192.168.1.25
port: 2010
resolvenames: json
username: Admin
password: xx
hmgroups:
host: 192.168.1.25
port: 9292
username: Admin
password: xx
path: /groups
resolvenames: json
hosts:
ccu3:
host: 192.168.1.25
username: Admin
password: xx

Generally your config looks ok. You should have a look at the Home Assisstant logs. My first guess would be, that the firewall settings within the CCU3 don’t allow the connection Home Assistant tries to establish.