During the opening of the game tap the F10 key until you make it to the main menu. Next click the escape key and you should have access to the gamepad setup under options. This is my configuration for the Xbox One controller: HP 3, LP 1, HK 4, LK 2, BLK1_6, BLK2_8, Run1_5, Run2_7, Select 9, and Start 10. After clicking save on the gamepad control window relaunch the game.

For some reason the only buttons it reads on my controller are the left and right triggers
I know it isn't a problem with my controller because it works fine for other games, including other fighters

I still haven't been able to launch the keybind / gamepad setup menu.

I enter the options menu, I try hitting ESC, CTRL + F1, and F10, but nothing happens.

At this point, I have no idea what I'm doing wrong.

I recorded a 30 second video of my launching the game and showing keyboard input and uploaded in on YouTube, but for some reason I am not allowed to post links on GOG forums.

Had to refund. Tried 2x wireless xbox 360, 2x bluetooth Gamepass, tried a mix of Bluetooth + wireless x360.. but it double registers only 1 controller for game pad 1/2. For local coop wireless Gamepass setup was next to impossible. Buy if u like to play with a keyboard but if u have a wireless game pad it’s a hassle to figure out. It does it by itself and no option to bind or setup the game pad. It ran better on emulation! I wanted to support legally but the experience on PC was bad.