Line Breaks in Editor Not Displaying on Site

When using the Fruitful theme on a site I am building, I have an issue of it not displaying the line breaks entered in the editor (using TinyMCE). Looks perfect in the editor, but on the page, there are no spaces between paragraphs. I’ve noticed that some pages default to adding a DIV section for every “paragraph”, and those do not respond to line breaks, nor can I add
, <p>, or anything in the HTML that will make it do so. Overall, the code these pages create is very messy, with <div> added every time the “return” key is pressed. However, other pages default to use the normal “p” in the HTML code, and display perfectly (with nice clean HTML).

How can I tell the site not to create pages using DIV and instead use <p> as the formatting basis?

Thank you.