I found a solution for now:
https://maps.djtechtools.com/mappings/8031
You need to rename the file in the latest version of djPro 2 and make sure the MIDI mapping is named with .djayMidiMapping exactly.
There is a midi mappings folder in Music > dj Pro 2 > MIDI Mappings and use this mapping. Then restart dj Pro 2 while holding the right SHIFT + Preview.
Then go to mappings and it should all be mapped.
Enjoy!
