Are you able to access the website on another computer, your phone or a different computer?

Please try to access the website using your phone's data plan (not WiFi), or a computer in a different location.  Sometimes local network or ISP settings can interfere with loading websites.

Does the website come up on a different computer?

Yes

Please contact your Network Admin or Internet Service Provider (ISP).  Here are some things to check:

Firewall or Proxy Settings blocking the site.
Antivirus / Antimalware software blocking access to the site.
DNS settings on your computer or router.

If you are not sure who your ISP is you can visit http://www.ip-adress.com/

No

Please contact i4 Support for further troubleshooting.