Hello RCU

I am setting up a plane using elevon(elevator and ailerons). I am using a JR X-378 FM Air MD2,4-537.I flowed the set up and they work backwards Left and right works on the up and down of the right stick.I have changed servo leads,tried a different receiver even tried a gws receiver.all worked the same.even reversed the servo travel.
so I am missing some thing in the manual.I am sure it is right in front of me I just am having trouble comprehending the instructions.
How do I reverse this?

thank you for your help.