Problems With Semi-Transparent Material

I’m in the process of creating a horror-based sci-fi scene for a class. I’m having trouble getting my mesh to output proper shadows. As you can see, the light shines through the transparent material fine, however…the actual opaque part doesn’t cast anything. I already have it set to two-sides. I’ve checked the two-sided shadow and lighting. I’ve tried checking the volumetric translucent shadow. The one in the middle has this enabled, but the color is off and there are artifacts. I’m literally lost.