Can't access my site, cannot display the webpage

Dear support,
My website danjacobi.com cannot be display anymore.
The page says : Internet Explorer cannot display the webpage.

I can login to my control panel but can't access to my Website Control, receive error user name or password.
My domain is online.

My account details :
Hostname: box6.host1free.com
let me know if you need more details

Please help me to resolve this problem
Thanks