Saintsmart self balancing robot V3

Hello, I purchased and built one of the Saintsmart self balancing V3 robots two years ago.
I had so many problems with it that I put it away till today.

I need some information as to the function of the two joysticks.
Their website doesn't contain a whole lot of useful information.

The controller is running Version 2.0
And the rover is running Version 3.0

Latest software as far as I can tell.

It self balances fine and pairs to remote.
From the right joystick pushing left or right moves rover forward and back.
(Much faster forward than back.)

From the left joystick pushing up or down turns rover left or right.

If you have one of theses could you please describe your controls ?
Also is your rover moving slower in one direction ?

Thanks, CJ.