Help with the plugins

Hey everyone! It's great to be here!

I have a problem, and I'm hoping you can help me out. FL Studio won't let me use downloaded plugins; I get a message saying it's not possible and to check if I've installed them correctly. I've already tried a few things, but nothing has worked. They appear in the list, but they won't open.

https://preview.redd.it/0awifb9bc14g1.png?width=1253&format=png&auto=webp&s=5c1f67229861e07574110221ed79e6333a4f0800

Thanks!