Nanokontrol2 soft takeover problem

Hi guys!

I use my Korg Nanokontrol2 in cubase 9 elements with mackie control, it almost works perfectly however, the faders does not pickup/takeover/catch the volume parameter. The knobs does this, but not the faders/sliders.

Does someone has an idea how to fix this? Also, is this a Korg issue more than a Cubase issue?

Looking forward to any answers.