Plugin working in Wamp but not online

I downloaded a file (lobibox a notification plugin) wich i use in my offline website (WAMP) just fine; but doesn't work on my officiel website...

I made sure all of the files and paths were correct .

For some reason the plugin will not work on my website but works fine on other websites and works fine on my localhost...

Can anybody tell why this is ? and what I should do ?