How are you connecting this to the WiiU?
I tried using it directly from the USB port without any luck.
WiiU- > GC Mayflash USB Adapter -> 8bitDo NGC Retro Receiver -> NGC Modkit worked!
Wii U without using the gamecube->usb + 8bitdo gamecube dongle.
So directly bluetooth to the WiiU.
Im guessing I need to create a controller ini for it right?