Hi,
Please check if you have any forced page breaks in your HTML. If you do not forced page break, the contents should automatically flow to the next page at the bottom of the page.
If the problem continues, please try to produce an HTML page that demonstrates the problem, then you can either send the HTML page to us, or if you can put it online and make it accessible to us. We will try to to use the URL to PDF feature to test the page and see if we can see the same problem. Usually as soon as we can see the problem, we will be able to find out the root cause.
You can find our more information about sending test files to us here:
http://www.essentialobjects.com/forum/test_project.aspxThanks!