walkera devo 7 tx programing

Hi, I'm a beginner drone rider, and I bought a "tinyhawk s" drone and "devo 7" on sale, and even though I found the bind button under the drone, it still don't want to connect to devo 7. Can anyone advise me how to do it? and is it possible at all?

Anyone have experience with the DEVO 7 Transmitter and setting up plane with inboard flaps and retaining individual aileron control with out use of "Y" harness? I've been battling getting it set up and have almost got it, but can't seem to find way to adjust the input of the FLAP points for each...