See attached screen shots of your demo site. Mine looks much the same way. Click on Blog, Sleeky Pro (the first blog article), then click the Uncategorized category in the breadcrumbs to take you to the category page. If you scroll down you will see it looks like there are divs missing.
With our premium themes, we offer access to site documentation, video tutorials and timely support. Even if you have just started on WordPress, our support staff have the patience to help you create appealing sites gracefully.