deconz-rest-plugin: Can't pair any devices + Firmware: Not Connected

Hi there, I’m running a Pi4 headless with the conbee stick 2 on a USB 2 port with an extention cable. Domoticz, PiHole, and OMV are also used on the pi if that matters. I did the configuration as stated in the setup instructions. I also dissabled the gui version. Now the webinterface is working fine so far and I can see the gateway. However I’ve two problems:

1. the firmware is always saying “not connected” to some reason
2. I can’t pair anything. Now I know the stick is working because I tried it on my windows machine -> Worked perfectly.
3. I can’t swich the channel (also working on windows).

when I run sudo systemctl edit deconz I get this: # /etc/systemd/system/deconz.service.d/override.conf [Service] ExecStart= ExecStart=/usr/bin/deCONZ -platform minimal --auto-connect=1 --http-port=8085 --dbg-error=1 --dbg-info=2

Funny thing is: I can see the firmware + pair a device if I stop the service and start it manualy with deCONZ -platform minimal --auto-connect=1 --http-port=8085 (Ok, pairing only worked once… 😦 )

Any ideas what could be the reason?