HA in Docker under SonOff cube (iHost) - needs "pairing Code"?

As the topic says, I’m trying to run HA in Docker under Sonoff Cube (iHost).
HA appears to “discover” the iHost’s ZigBee bridge function as a ‘Homebridge B2E3 O2B6 (Bridge)’. When I try to configure it to see my ZigBee sensors in HA, it asks for an 8 digit “Pairing Code” and tells me that I would find it on the bridge or its packaging. Of course I can’t find anything like it…
So how do I get HA to see my ZigBee sensors and give me their values, please?