Innuos Zenith can't connect to my.innuos

Hi--

Just took my new Innuos Zenith Mk III out of the box and hooked it up to an ethernet
port on my router to my Win 10 desktop and can see it fine (including its empty file
folders, lol) but as soon as I try to go to my.innuos.com to begin fw d/l and setup, their
page says no Innuos server found.  I guess they can't see my i.p. address so I've tried
re-starting the Mk III, turning off my A/V, checking and turning off auto port routing and a
bunch of similar things but nothing works so they can see my device and I can finish
setting it up to actually use it, lol.

It's the middle of a weekend night in G.B. so not expecting much help from Innuos.  Not to mention
their "support" website is the most barren I've ever seen.  Only a copy of their Quick Start Guide, which
I already have, and a broken link (404 error) to their assumedly more in-depth user manual.  No FAQs, trouble-shooting
guides, user communities, etc.

Any input appreciated.