Mine joined up fine, and I see all my devices, so other than a potential issue w/your particular UZB stick, I don't think we have a general PC Controller/UZB stick issue here.
Regarding "Update" - this is the button I was referring to. Note the comments in this post that seem may be similar:
FWIW, I was also able to easily exclude my UZB stick as well. The SilLabs stick I have is a 700 series.
