I had exactly the same problem. I kept being told to use a different machine.  Luckily, I had 4 machines at my disposal….and the 4th one worked.

There's a real bug in the update utility that prevents it from working with most computers.  Eventide doesn't seem to be addressing this bug as far as I can tell.  There's no reason it should not connect if you're seeing the box in the device manager.