Vital plugin not showing up in GarageBand

I’ve installed vital on my old Mac running 10.12.6. Unfortunately I can’t upgrade any further on this old laptop. Regardless of that, I install many audio units these days and they usually work. My version of GarageBand is 10.2.0.

Vital doesn’t show up in GarageBand when I try to select a plug-in under AU instruments or any other category.

I have the component and vst and vst3 all in both the appropriate user library plugins folders and the general, Macintosh HD library plugins folders. I’m at my wits’ end. I’m a little new to this world so bear with me.