NI Kontrol S-88 keyboard freezes C13, won't start

The only available option in the MIDI Ports Setup, besides listing the FF802 midi i/o and the arc remote i/o, is the WinRT enable/disable. I don’t see any mention of WDM driver.

So, just to say where we are now, when the S88 in On, Hub fails to finish loading, and freezes. If I then turn off the S88, Hub continues to load and I can open a project as usual.

I’m all out of ideas, having tried a lot of different things. Am suspecting maybe an NI warranty issue.