Cant add device CC121 - Macbook M3, Sonoma OSX (Cubase pro 14.0.5)

Ah, then in this case you’re absolutely right, it must need an update by Steinberg. Other than that, in the mean time, perhaps you might want to try using it as a MIDI Remote instead, I’ve seen a script for it here:

Not sure how much it complies with the original functionality of this device, but you never know…