After about page 350, no page nos. appear. How do I handle?
Version of LibreOffice? Can you attach your file here?
We need more information to be able to help you.
Maybe you have created a page break where the page numbering stops, or a different page template will be used from there. You can find out if you look at the page properties in the sidebar. First on a page where the numbering still exists. Then on a page without numbering. Does it show the same page template?