I don’t know if the plugin is designed for this or not. But at your
page, the download counter counts only once per computer, it recognizes
the IP or something. But when I had your plugin installed at my page,
it counts every time you press it, even if you pressed it two seconds
ago on the same computer.

Do you use the same plugin at your page? Is the plugin able to count
every computer once- then why doesn’t it work at my page?
(link to my page showing the example)