I use the original (older) Apple Lightning to USB 2 Camera connection kit. It is just a simple adapter that plugs into the iPad and allows you to plug in a standard USB cable to connect a UR242, a camera, or whatever, to the iPad. Mine works fine on my iPad Pro.
I’m curious about the new Apple Lightning to USB 3 one, though, because it has a port so you can connect a charger for your iPad at the same time. The original one doesn’t allow this, so when the iPad battery runs down, so do you.
Does anybody have success using the newer one?