@aurélien Sorry, but unfortunately I don't think you're going to get what you want.
Here is the manufacturer's documentation:
https://www.waveshare.com/wiki/GamePi43
Read until the end and realize that the manufacturer does not provide a driver for this product for Recalbox 7.2.2 on Rpi4, that is, it is not compatible with the latest official version...
It doesn't work when you upgrade to the latest version of Recalbox because the manufacturer didn't make a compatible driver, I recommend you contact the manufacturer.
