I have an iPad PRO 1.gen and I’m testing latest+beta MG2 before buying. It works great as standalone, no problems here, but I get no audio in looper (Group the Loop) via IAA. I don’t use midi. Other synths are ok (Korg, Magellan…) and are all listed in looper’s IAA input list. Did you disable inter-app audio support? IPad is updated to latest version, my audio “interface” is iRig2.