Rekordbox 6 no channels available in audio for Z2 sound driver

Hey guys I’m running Rekordbox 6 with Traktor z2 mixer. I have tried other sound drivers. I have tried to reinstall the driver which did not work. I’m using Rekordbox on Traktor Z2 with cdj 350s and Rekordbox dvs signal. The sound goes through to the mixer with all control but I’m unable to get any control on the cdjs. Anyone able to assist ?