Commercial sites opening from my links
After publishing my site, the site opens in google chrome. The site looks fine but when I click the link to the PDF version of my publication, it opens to various other commercial sites; not my PDF. When I click the link to the ISSUU version of my publication, it opens fine but when I click to move to the next page, a separate window opens to another commercial site. These are not my links and my readers are angry that these other sites open. Thoughts or suggestions? Thanks.