I had a problem where I couldn’t send MIDI from the iPad to the Move over USB-C, because the iPad could only see 2 of the 4 MIDI ports that the Move has. The iPad needs to be able to see the “Standalone” MIDI port to be able to send MIDI to the Move.
If you have the same issue you might want to try resetting all settings, as I was recommended to do by Ableton. On the iPad went to Settings > General > Transfer or Reset iPad > Reset > Reset All Settings
This worked for me, I now have two-way MIDI and Audio available over a single USB-C cable between the Move and the iPad… and I also have a CME Widi Bud Pro Bluetooth MIDI adapter I will need to sell… 