DK Bongos don't work

[Korados]

Hello,

I found my DK Bongos today and wanted to try them out with Dolphin (4.0-9475). I have the Mayflash Gamecube Controller Adapter for Wii U
and connected it to my PC. Then I set the Controller to DK Bongos and tried to start the game. But the Bongos don't respond.
I already updated the Adapter to the newest firmware. A normal Gamecube Controller works perfectly.

Strangely, when I set the Controller to Gamecube-Adapter for Wii U, Dolphin says that the Adapter is not connected although
it works with a normal controller when I set it to Standard Controller.

What can I do now?

Thank you for your help!

EDIT: I got them to work now! I don't know what I did but suddenly they worked!

[JMC47]

Did you set it up properly with zadig? If so, it'll detect it, then you hit configure and use "DK Bongos" in the settings. You need to be able to detect it in Native GC adapter mode though.