The USB receiver was not recognized when the software started. I suspected a hardware error.
I opened the USB receiver stick and examined the circuit. I discovered that a 16 MHz quartz component was defective. >> see picture
I replaced the component and the USB receiver was recognized again...
although i ended up accidentally changing my nand with no way of going back bc i didn't know you needed a gamecube controller to restore it (i have a wii minus/1.1, which doesn't have gamecube controller support)
and if i find the sd card i have my NAND backed up on, i can not only restore the NAND if i solder the right part in, but i can also put my NAND on dolphin, then i can play dolphin online, like PMEX Remix or MKWii Riibalanced