Dropdown or folder tree not available

I have sorted all of my images into folders but now when I go to add an image, the folders are not visible in the add image interface. It says “no folder selected” and when I try and choose a folder, it only offers unorganized, which is empty. There is a picture that says “Want to switch between folders more comfortably?” And when I click on “I want to learn more!” I am taken to the Real Media Library plugin page. I don’t see any instructions there to display the folder tree.
I have looked in the settings, but they only offer one setting (sorry I forget what it is, but it does not sound relevant).

I am sure I will be told to disable all of my other plugins, but that is such a pain and means redoing the customizations I have already done with some. I am pretty sure this plugin was working before, but I haven’t added images in a few weeks and I may have added the folders after that time.