Dreamcast Arcade Stick problems

Hey guys. I apologize beforehand if this question is out of place or was answered before, but I can’t seem to find an answer anywhere.
I have a Dreamcast Arcade Stick and I wanted to connect it to my PC, so I bought a Mayflash Controller Adapter. After some struggle, I managed to make it work, however the Z and C buttons don’t seem to be recognized by any mapping software or anything of the sort.
Do you have any idea why this happens and how can I solve this?

It’s because that converter, IIRC requires an L/R analog and not the Z/C digital versions.

That was what I was afraid of… Damn it… And isn’t there some kind of mapping software that can recognize it and make it work?