Tried restarting my computer, tried plugging my expression pedal (a cheap Nektar model) into both inputs, tried turning the AXE I/O on and off. Audio comes in and out fine, but the expression pedal doesn't seem to work. I'm on a 2018 Mac Mini running Big Sur 11.6. The expression pedal used to work fine, but last time I tried might have been while using Catalina. The Axe Control panel software and Axe I/O firmware are both up to date.
https://imgur.com/a/ZNt1OjR