Sorry to hear that your fixture does not work. Actually, rekordbox lighting engineers tested the lighting fixture with the simulator.
However, nothing is lit when using rekordbox lighting, which is in a way as expected, unfortunately. 

This lighting fixture in rekordbox lighting has the cautions below.  Many customers do not notice these cautions.

First, the fixture category "Effects" (*1) as a whole is not supported. Also, some channels with (*2) cannot be controlled by rekordbox.   

Deeply sorry for not meeting your expectation.