I turned Endurance Page Cache off in WordPress Settings as well as had HostGator deactivate it on their end and it broke the site. We decided to activate Endurance Page Cache again on HostGator and the WordPress site. I think your plugin needs to be updated to work with the latest version of WordPress since it worked correctly on older sites earlier this year. Do you have a suggestion of another free maintenance page that would allow us to put the company logo, address/phone, and social media in the layout?
