Did you follow this ?
https://www.youtube.com/watch?v=SPQlxYXAz4QPS : we have an "APC Mini" and it works well with it.
To control the LED of the buttons, we have to:
- in window "Preferences", check "Midi out" and select the midi device in the combo box
- in window "Button trigger", check "Midi out", press the buttons "Clone midi in", and select "0" (instead of "auto") in the combo "Data2 Off"