I have been working on this issue but soncily speaking I'm not getting anything to come out of C, LFE, LS, RS, even though Logic pro x is sending signal and is routed propery. Also Audio Midi setup is really confusing when using 192 mobile. I can't seem to separate the "Studio pairs" (Main Out L/R, Output 1/2, Output 3/4) into individual channels. Only Studio PAIRS L/R Very frustrating.
I hope you are able to figure it out,