I have latest apple mac mini m4 (works amazing) HERCULES 500 is excellent mixer and sound is great (bad sliders too light no feeling but work) fx buttons dont work and this is a mayor issue, crossfader on off i also dont use so i turn it off but message was from djay pro was you changed settings please go back 
and there was warning sign yellow like triangle fader was missing from the app, i cant use filters except from djay pro
FX Buttons (1-4 for BOTH DECKS)
The filter knob is designed to be used as a filter and effect knob
When one FX1 is pressed both filter knobs should change and be used as a knob for the effect
When one FX1 is pressed again both filter knobs should change back and be used as a knob for the filter effect (high pass/low pass)
This should happen for all 4 FX buttons on both decks
Even with manual midi mapping it is not possible because the four fx buttons are for both decks and the filter knob is actually filter AND effect.
- Music selection knob LED not working - this one actually should pulse with the beat (and different colour for each bar and even “mood”). If the song is upbeat you should see red and purples and If the song is more mellow you should see blues and greens this is usually based on the bom or key
