[Zubersoft]

If you turn off AirTurn Direct Mode and tap outside the dialog, it should just dismiss it. That works perfectly fine on my iPad. If I then bring up the dialog, it stays disabled. That shouldn't impact how MobileSheets process key commands though. You should be able to go to Settings->Touch & Pedal Settings->Pedal Actions, tap the keys field for pedal 1, tap the clear button, then press the pedal and see a key show up. If it does not, what key command is your donner pedal currently sending? 

Mike