Reply to Korg nano kontrol not recognized by Traktor Pro

Hi,

I have problems with my new Midi controller "Korg nano kontrol" in Traktor Pro. Yesterday, it perfectly worked and i made the mapping, using the "learn" function of Traktor, but today I noticed the mapping didn't work anymore, so I deleted it to make a new one. Unfortunately, the "learn" function doesn't work any more and I can't make my mapping.

Nothing changed in my laptop between yesterday and today, and Traktor detects the controller, because in the "Midi Setup" section, I see "nanoKontrol[