I have a Razer Panthera (the original, not the evo version) and fightstick.html doesnt register any of my button or stick inputs in any browser I have when I try to set them, but it recognizes everything in gamepad-tester.com. Really confusing.
I have the razer atrox (the xbox version of yours, with a brook converter to PS4) having the exact same issue as well. Is it the razer's just not being compatible?