Picade Player X on Retropie -> need to be replug to work

Hello,
I make a handheld game console with Player X inside as gamepad controler, on Raspberry PI 3 A+, using Retropie 4.7. Unfortunately, on each boot of Retropie, the Player X is not recognized? i have to replug the USB to work. In Retropie, i force the Player X on the first gamepad order. but no changement.
Any ideas ?
thank you.
cheers
PieBoy