File attachments not being loaded?

Hey guys,

I created a form with a few file uploads.
Once you hit the “send” button, the form is loading yet nothing happens. I can see the uploads folder is empty (it has writing permissions).
This is the link: http://www.isq.org.il/רישום-בפנקס-העוסקים/

What could be the problem?

Thanks!

The page I need help with: [log in to see the link]