@Efriim well thec64 mini doesnt even have a boot folder or 99.9% of linux in it. They made that thing absolutely bare bones as possible. I did discover that the ppsspp emulator on the pi uses a gamecontrollerdb.txt. I added theMayflash adapter to the gamescontrollerdb.txt and then tested in the emulator and the hats work fine. So i am not sure what the c64 mini’s problem is. I do however have a raphnet chip for wii classic controllers that i can solder up the wires to tomorrow to see if that one is working.
Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first