Accessing marketplace content in project?

I’ve downloaded content, it’s shows up in my vault, I’ve added it to my current project. How do I access it?

It should be in your project’s content browser in it’s own folder.

When I look at the project folder, the contents appear empty but the directory says it’s populated. Perhaps it’s reading the wrong directory? I can’t drag/ drop the files and when importing, it doesn’t recognize the “u” files.