If you can't bind with the rx that it is supposed to bind with, check that the radio is set to the correct spectrum mode. AFHDS vs AFHDS 2a. I think it needs to be in AFHDS to bind on the 9x and the t6v2 and AFHDS A2 for the rx it came with,
the flysky... turnigy... etc ... radios are awesome for the price ... only issue I ever had was every 5th ish radio i ordered the tx/rx either wouldn't talk, or the range was like 15ft lol ... considering I could get 4 or 5 for what i used to pay for 1 radio before hand I really don't whine that much about it. now if only 2.4 would work in subs... LOL