
@Scott > Presumably you have the mixer's SEND connected to the EFX's INPUT, and the EFX's OUTPUT connected to the mixer's RETURN - and you should be using TS cables, not TRS.
The effect button should be ON, with a channel assigned on the mixer, and the wet/dry knob at 12 o'clock.
That should be working, but if not (and as you have verified the effector works with another source), the problem may be with the mixer -- and because it's another brand, we can't provide assistance with that here.