The magic setting is in Network Settings > BT Keyboard Connected > ON.
Make sure the button on the back of the pedal is pushed in. Ignore the warning that “The connected USB device is not supported”. It will disable the onscreen keyboard, which is a bit annoying, but it will turn your pages if you have the “BT Keyboard Connected” set to ON.
Luckily, the iPad works just fine “upside down” once you get used to the home button being on top, since the camera connector sticks out.