In the plugin I set to 5 level.
I did three easy folder modules and inserted in an article.
http://uni5.co/index.php/en/testing-easy.html
The first module had one photo and 5 sub folders. But it showed the photo without sub folder.
the second module had only sub folders with pdf files in it. Totally it was not displayed.
the third modeul with 40 pdf files with no sub folders, displayed all.
So how to display contents along with sub folders.