@sirwan,
You can DM me the link on Twitter at @jordanleven. However, you might have a misunderstanding of what this plugin does. Just so we’re on the same page, this plugin is for requesting browsers that are currently visiting a website to refresh – not for servers to flush their cache. If you’re having issues with cacheing on something like NGinx or Varnish, that is seperate from what this plugin does and needs to be resolved serverside.
In any case, if you DM me the URL on Twitter, I can head to the link you provided on Safari to confirm that the plugin is working properly.