Hello !
I just bought Traktor Audio 6, I plugged it in with Traktor Pro Version 3.1.0.27 and Mac Mojave 10.14.6 system but it's not working, what should I do?"
Does it light up if it is connected to your Mac? Does it show up in System Profiler in the USB section? Can you select your Traktor Audio 6 in System Settings as audio input or output?