Can someone help get my shared folder back in the library

It is a little difficult to know exactly what problem you are having.
If you are saying that you have files in a directory, and that directory/folder is included as one of your shared directories, but the files do not appear in your Files window...

Go to Setup -> Sharing and UNCHECK-MARK the box where it says: Only share these extensions

If your files than do appear in the display, it means that you must add the extension of the file type to the column below the Check-mark box. After doing so, you can then Check-mark the box again.

If your files for sharing directory/folder is not listed in the display on the left called Files, than you must enter them......
Click on Browse and locate the directory you want, then click on Add and confirm your choice(s).

btw, in the future please always mention what version of the software you are using and also the basic information about your setup with what Operating System and details about your computer and internet connection.

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