binding issue with Hubsan H501A to Advanced controller and H502S controller

Описание: Followed binding procedure many times but it will not bind to either controller.
The drone is fully finctional using the relay or connected directly to the phone but nillnot connect to any other controller and the FPV googles will also not pick up on any signal too.

RX 1.1.33
FC 1.1.36

Tried the H502S controller on 901A 4.2.24 & 4.2.28 firmware but no difference binding ability.