Conbee 2 connection lost

Configuration Zigbee
1

I installed Conbee 2 on a Raspberry Pi 4 which runs my Home Assistant, using the Zigbee Home Automation integration, which prompted me for something like “ usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II”

It worked very well. I successfully paired a number of Zigbee devices with the Conbee 2. Problems arose when trying to pair Xiaomi Aqara button switch. I tried using dConz and Phoscon, during which I seem to have lost connection with the Conbee. When I try to run the Zigbee Home Automation integration now, I am now offered a serial connection which does not work – see screenshot. When I run Phoscan, I get Firmware Not connected. I have located the Conbee approximately 1 m from the Raspberry Pi and other devices. I have reset many times and tried the usual restatr steps but to no avail.

Can I completely / factory reset the Conbee and start from the beginning or do I need a new device? Any other suggestions as to how I can reconnect with the Conbee?
Any help would be appreciated.

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2

You can’t use deconz and zha at the same time.
Only one can control the conbee stick

3

Thanks, Sam! My problem may have arisen from installing the dConz integration when I already had ZHA integration installed. The situation now is that I cannot properly install either of those integrations as they do not seem to connect with the Conbee.