Plugins downloaded from MuseScore website aren't working

I've been on a spree of researching and compiling a list of plugins I'd like to use in writing my music on MuseScore 4, and today I try downloading some of them for the first time. I downloaded the files as zip files and extracted the contents into the plugins folder for MuseScore 4. Upon opening the Plugins tab of the home screen, the plugins appeared and could be enabled, but when I tried using them in my score, I simply got a blank window (seen in the attached image). I'm not sure what I did wrong, if anything. If someone could help me, I'd greatly appreciate it!