There is a bug when you use multi select with stereo linked inputs and try to change the input source from “Analogue” to “SDHC/USB” (config/Input tab) for audio playback from SD/USB/Daw. You have to select the linked chanels independently from mono. When are the devs planning on the next firmware update? Thanks!
The bug is when using the iPad App, not the On-Screen built-in display. The other thing about this is that the current Input Source is not indicated with multi-select, nor is the source change indicated. So, you don’t really know until you leave muti-select what you may have done to the input source.