Deconz 2 detected and not detected

Hi I have a deconz 2 stick that I want to connect to OpenHAB. Phoscon is installed but does not connect to the stick.
Extension cable is attached and the installing is on a Rasbian Openhab system.
I added the beta repository for phoscon. Installing of phoscon worked like a charm.
Now I get the following output when searching for the device.

—- snip —-

openhabian@CarBee:~ $ GCFFlasher_internal -l
GCFFlasher V3_17 (c) dresden elektronik ingenieurtechnik gmbh
Path | Vendor | Product | Serial | Type
/dev/ttyAMA0 | 0x0000 | 0x0000 | | RaspBee
openhabian@CarBee:~ $ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 1cf1:0030 Dresden Elektronik ZigBee gateway [ConBee II]
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
openhabian@CarBee:~ $

—- snip —-

Anybody has a clue why the stick is detected by lsusb correctly but not by GCF and then also not by Phoscon (Firmware: not connected)?

Any help appreciated! Thank you in advance!

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