Iweb is not uploading changes to my site

Hi, I was trying to update my web site last night, built with IWeb. I know it's not supported any more, but figure there are probably people who are comfortable with the program like me and are still using it. I saved my changes and clicked on publish, and it seemed to work fine. But when I check the online site, it's still the old version. The program uploads with FTP to the hosting site, and they were not able to help. Thanks, Lucy