Hello @acris!
Thanks for the reply! Just updated and it's working fine now, with the settings in this thread. It's recognizing just 1 controller and the "Select" button is working fine too. The only additional step that I needed to do was reconfigure the gamepad, because the hotkey wasn't working.
Other thing, but I think it's GameHAT related it's the color depth. I think it's running in 16 bit; anyway, for gaming it's fine.
Besides that, everything is perfect. Thank you very much.
Best regards.