It doesn't do anything

When I publish it doesn’t break the page, in the code I only see this where the break up is supposed to be </div></div></div> <div id="post-part-2" class="jps-wrap-content jps-parent-div"><div class="jps-the-content jps-last-slide"><div class="jps-content jps-clearfix">

Any ideaS?

https://wordpress.org/plugins/jquery-post-splitter/