Click in the footer section where the page numbering appears. When you do that, the Header & Footer Tools ribbon will appear. In the middle of that ribbon (in the "Navigation" section) click on "Link to Previous" then exit to normal view. You will need to do this when any section breaks are inserted to insure continuous page numbering throughout the file.



Hope this helps...

It is far more likely that this is a document with "different first page" set.