Can't import anything into Library

My library is empty and when I try importing anything it doesn’t appear in the library. This happens when I start a new project and also with all previous projects. Any suggestions to resolve this issue would be appreciated.

Try creating a new library and selecting a folder that you have access
to read, write and modify on from your computer.

Make sure that the stuff you’re importing does not have a space or
special symbol in its name. Likewise for the entire folder path to reach
this item you are attempting to import. This doesn’t mean just the
immediate folder the item is in but the parent of this folder and its
parent all the way to the root of the drive.

I don’t receive any error messages when importing, it seems to have imported, comes up with a rename window box but doesn’t appear in the library or side bar. I created a new library and it does the same thing.