I have a Windows PC and my Logitech game controller does not work with your game. But my controller is recognized on http://gamepad-tester.com on my chrome browser:
Hi Chris,
On the Gamepad Tester website, when I press the left button on the D-pad, it looks like the first picture.
The website identifies my controller as a Logitech.
For the X-box mode, it looks like the third picture below.
The second picture is how it appears when I press anything on the controller.
Hope that helps,
Mark
picture below: