Connection error

I’ve just installed the plugin but when I want to access to setup page a connection error occurs. When I execute the troubleshooting tool it indicate an Hotlink error. So I’ve disabled my security plugins but that can’t solve my problem.
And when I want to subscribe to the forum, it’s the same answer “connection to server fail” !!
if someone can help me please, thanks a lot

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