RE: flaps with AFP and FUTABA 7CAP
Sorry I am not sure about 7C, but once you find out how to asign the ailerons, follow the below:
Check the servo function on your Tx to check your Ch1 and Ch6 servos move as expected with the spoileron and flaperon mixes on and off.
In AFP control panel set Left Aileron and Left Flap to Ch6 and Right Aileron and Right Flap to Ch1.