gamepad doesnt work for me :( (using browser)
I'm sorry to hear that. Web version runs in a javascript emulator of Amstrad CPC and probably is not working properly with most gamepads. If pad buttons are not reconigsed in redefine keys menu (pressing 2 in main menu) your best option probably is remap the pad buttons as keyboard keys with a program like reWASD https://www.rewasd.com/joystick-mapper.
I hope this helps, I'm afraid that's all I can contribute as long as I didn't developed the javascript emulator.
Thanks for playing! :)