Change Text Case

This plugin does not work for me. I select H4 font size and have tried Sc or Tc and my copy still comes out all upper case. Is there a fix for this?

http://realfoodsimpleliving.com/inspiring-foodie-books/

The copy directly under the photo is what I want in upper/lower case.

https://ww.wp.xz.cn/plugins/change-case-for-tinymce/