Not able to access Expert UI from Port 8084

[nochkin]

Yes, ports 8084 and 443 are used by mongoose process.

The expert UI is http://192.168.1.100:8083/expert
(replace "192.168.1.100" with the IP of your server)
Or you can also access the expert UI by navigating Gear icon -> Devices -> Manage with ExpertUI. Although, it's not always there according to the topic starter.

[Black Cat]

Worse again, I stupidly updated a second Popp I have for evaluation and the same has occurred.

While the RP2 may be OK, this software is full of bugs, thankfully I use Vera UI5 for my automation.
Any thoughts (or hopes) I had that Z Wave me would be superior have quickly deteriorated with both controllers essentially bricked.