Getting Joystick Input from Matricom G-Pad BX?

I am writing a VR game for Google Cardboard, and in t$$anonymous$$s case it must use a bluetooth controller. I am using Unity version 5.6.0f3. T$$anonymous$$s is my first time trying to get input from a controller other than a mouse and keyboard, and I've been searc$$anonymous$$ng around for an answer to t$$anonymous$$s for a few days..

I am trying to get input from the right joystick on my Matricom G-Pad BX controller, w$$anonymous$$ch is currently connected to my computer via USB for debugging. The input Type is set to "Joystick Axis", and I have tried every Axis and Joy Num from the dropdown menus in the InputManager panel, including "Get Motion from all Joysticks", but the right stick still doesn't work.

I've checked that I put in the correct string for the name of the Axes in the script that is using the input. Those strings were copy-pasted directly in to the script. I've also checked that the controller works-- it works fine for playing other games.

The left stick works just fine-- I have it set up using two separate input Axes (called LeftJoyStickHorizontal and LeftJoyStickVertical), and they are using the X and Y axis respectively. Those are both using Joy Num "Joystick 1". Every other value is the default.

The right stick is set up in the same fas$$anonymous$$on, but again, no Joy Num or Axis value I've tried works.

At t$$anonymous$$s point I'm just trying to print the value of the input to see if it is working. I have t$$anonymous$$s code in FixedUpdate:

 leftJoystickHorizValue = Input.GetAxis("LeftJoystickHorizontal");
 leftJoystickVertValue = Input.GetAxis("LeftJoystickVertical");
 rightJoystickHorizValue = Input.GetAxis("RightJoystickHorizontal");
 rightJoystickVertValue = Input.GetAxis("RightJoystickVertical");
 
 Debug.Log(rightJoystickHorizValue + ", " + rightJoystickVertValue);

...And the log never prints anyt$$anonymous$$ng except "0, 0" when I move the right joystick.

Any ideas what I'm doing wrong here?