Garageband is not loading anything in my plug-in window

I'm currently struggling to add new instruments into the garageband software. I followed some advice and found the "Numa Player" that comes with different kinds of instruments. I followed the steps of installation and attempted to open the plug-in, but nothing shows up. Clicking "Numa" in the plug-ins section will lead to this extremely large window with nothing on it. I have checked my settings and can't really pinpoint what is causing this. I will provide a picture. Any help would be great! Thank you!