Reply to Cue monitoring function, volume and cross fader problem

Hello everyone!

I am having a bit of a problem with cue monitoring function, volume and cross fader on my Denon DN-X1600 mixer. These functions don't work. I am using my mixer on MIDI mode with my Traktor software. My Traktor settings are:
Output routing: Mixing mode: External
Output Deck A,B,C,D: Mixer output routings
Output Preview: not connected
Output FX return: not connected
Input routing: Input Deck A,B,C,D: Mixer input routings
Input FX send (ext): not connected

I have mapped my volume fader and my cross fader(as X-fader) in Traktor. Still it does not recognize them. Now with Cue monitoring function, mapping isn't even possible, because the mixer cue button can't be learned in controller manager/device mapping section. EQ knobs, however all work in MIDI, like they were mapped.

I have my USB assign on my mixer set to Master instead of CH, and maybe that has something to do with it, but I am not sure.

If anyone is using a similar setup and is familiar with my mixer, please help, because this problem is kiling me.

Thank you for your help all!