Funny thing about the fsi6, it actually uses two different protocols. These afhds afhds2a. They are not compatible with each other. Try going into settings and switch your tx to afhds mode.
Then turn your radio on holding the bind button, then turn your kwad on holding the bind button.
If that don't work try putting your kwad into bind mode first, then your tx. Then unplug your kwad, then switch off your tx.
Keep trying different combinations of things like that, it should bind eventually. Believe me I've been there, it might take several tries.