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Firefox can’t establish a connection to the server at http://www.candidavenue.com.

Looks like this domain name was only registered recently. Has the site ever worked?

Try:
– switching to the Twenty Eleven theme by renaming your current theme’s folder in wp-content/themes and adding “-old” to the end of the folder name using FTP or whatever file management application your host provides.

– resetting the plugins folder by FTP or phpMyAdmin.