clear the cache and history, try through google redirection. Can you describe your problem in deep like what is the problem certain things are not loading or entire website is failing to load. the prob can be of the website also.

Perform the suggestions mentioned in the following articles:

• Make sure you are using the "Remember History" setting as described in this article -> Settings for privacy, browsing history and do-not-track
• Clear Cookies & Cache
• Clear the Network Cache

Check and tell if its working.

See also;

• https://support.mozilla.org/kb/Websites+look+wrong