Hi, regarding 3D light, the effect addon is just a simple light projected from the viewer toward the scene. Since we don't have the right information or effect process from C3, we can't do much more than that right now.
Think of it as the camera having a flashlight or torch pointed at the scene.
When using the addon don't forget to set the light diameter to 1-3 (can be used to make it more like a spotlight or a flood light.)
Here's one of the examples that is on the itch site: FighterPerfLayerLight3D.c3p
Let me know if you need any more info.