Unable to setup ZHA with Conbee II

Hi everyone,

I am trying unsuccessfully to set up ZHA with a Conbee II, this I thought would be simple especially so when viewing the YouTube videos on how straight forward it seems. I am new to all this, running a Raspberry Pi 4 8gb with the latest Home Automation build. Every attempt to load ZHA fails and numerous Google searches has not come up with a solution.

The error I am getting is after running through the ZHA integration is “Failed to connect” which is not very helpful.
Could someone please point me in the right direction as after days in trying to get this to work I have run out of options. (I am using a USB extension cable and none of the other posts seem to be relevant or the suggestions seem to work for me.

Thanks
Warren