One tidbit is that when you login with "Admin" as spelled with a cap A (I saw it somewhere, not in the instructions), anyway it doesn't work. It's "admin", then the pw. AND as Steve said the cap I and the small L can take a few attempts to figure out what works.
I had to mess around with shutting the Extreme off and looking for the IP address with Fing. When I first looked at Roon it showed a different IP address that what I currently had, BUT that IP address that I got from Roon delivered "unable to connect".
After rebooting (after trying unplugging the DAC cable from the switch to the router) and messing around Fing showed me an entirely different IP address. I inserted that into XDMS and then "in" and playing music.
The HW took a total of about 10 minutes and zero issues. The SW (stupid login Admin/admin)and then getting the IP address took some tinkering, probably just me, will be interesting to see how it goes for others.
Too early to give any sonic impressions.
This pic is where I saw the cap A in Admin and it stuck with me. It's always the "little things".....
View attachment 117653