This is obviously a back end thing, though I opened a ticket and was asked to connect via chat and twice timed out waiting....
only 3 of 4 devices show up in the Dashboard in the Web UI. The missing device is a Windows 10 PC that I have enabled and reenabled to force it to show, reinstalled the tray as well, and no luck.
The device backs up, the device shows up from any client window in the drop down list when you select the restore option from your tray app, and I can see the system and the files in the classic view (when you first sign in).
It just doesn't NOT show up on the dashboard.
Ref Ticket: 755702647
Thanks