We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
Conversion to PDF changes page numbers
I have been utilizing Lulu's conversion to PDFs from Word documents for the interior of my book. I format the page numbers in Microsoft Word for Mac 2011, but when the document gets converted to PDF online via Lulu, the page numbers no longer correspond with the table of contents. The text in the content of the book adjust slightly as well, which seems to be the problem.
For example, a paragraph that starts at the top of the page in the Word document is now halfway down the page in the PDF. The conversion does not keep the Word document exactly "as is," which ruins the page numbering.