Can't use an ipega 9025 controller

[nubirro]

I'm using the 17.12.02 upgrade of the recalbox 4.1.
When I pair the controller using X+Home (the gamepad mode) the recalbox does not recognize the controller as a controller. Then, when I press A+home while the controller is connected with the recalbox, the system reads the controller as a Keyboard that I can configure the buttons but it does not work on the games.

How can I fix it?