Output without paragraph breaks

While posts are displaying fine, I’m using the Blog-in-Blog plugin to output categories onto a static page. The plugin is grabbing the HTML code as seen on the editor, which means there are no paragraph breaks. I tried manually putting in <p> or
in the HTML editor but they disappear once I hit update.

Is there a way for WP to hard-code these in an editable fashion?

(I also posted this in the plugin forum, but I get the sense that it’s not necessarily a problem with the plugin.)