Why is this simple unit so expensive?

I don’t understand why now with 10.5 it doesn’t work. Up to Cubase 10 it was absolutely fine. I feel like they must have gone out of their way to make it not work. Whats the big conflict?
I have to say I’ve been using the cc121 so many years I can’t not press the buttons expecting something to happen, and obviously nothing does happen.

Hopefully it’ll be sorted by March.