I cannot get sound to AudioMulch from my Fireface 800 ADAT channels. First 6 ADAT channels are inputs 13-18, in AudioMulch AuxIn 6-8. I see the signal in the interface mixer, I get it in Logic, but not in AudioMulch. Audio is switched on of course. Input preferences are configured for all channels. Input monitoring is set to AuxIn 6-8. AuxIns are currently directly cabled to the main outputs in AudioMulch. But I neither hear nor see the signal.
(AudioMulch 2.2.5 and Mac OSX 10.11.6)