My Denon MC6000MK2 IS NOT WORKING WITH DJAY PRO

I am using a 2015 MBP and just installed DJAY PRO2. Audio comes out of channel 2 and all works fine, gain volume.

When I play deck one I can hear it, but all 4 decks the gain is down and so is the volume, so I have no idea where to control that deck. I tried changing channels on the setup but no success.

Any recommendations? Much appreciated