I have received many enquiries on this, so I'll just post it here for everyone.

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.

Then experiment with varying degrees of spoilerons during a harrier, and flaps during landing. One of the interesting and realistic experiments that can be done in AFP.