I bought an Ípega 9021 joystick gamepad to use on the TV Box and Android Smartphone and can't sync a bluetooth. The devices did not recognize this joystick. I looked on several sites on the internet and nobody reported that it had resolved.
I ended up being able to solve it as follows: holding the "A" key and then the "Home" key on the joystick, I activated Ípega's keyboard function. Thus, the Android TV Box and the android smartphone saw the gamepad in the keyboard function. I turned Ípega off and turned it back on by pressing Home + X to activate the gamepad function. Like this,
everything was resolved and I managed to use the joystick on Androi. I hope this helps other users, who are experiencing this problem.