Aren't the ailerons by default on channel 1? The elevator on channel 2, throttle / speed control channel 3, rudder channel 4, landing gear channel 5, and flaps 6. I've only had to deal with 1 Aittronics receiver before, but if I remember right, it was the same as Futaba and JR
OOPS .... my bad ... the second slot is channel 1 .... duh ... first slot is the battery. If your radio is set up for flapperons, and you don't have the manual, plug one of the ailerons in the second slot and the other in the 7th (channel 6) and see if they work