[Hummingbird] Unable to clear cache in Hummingbird

Changes to the site aren't rendering in browsers e.g., Firefox, Opera, Chrome or Explorer even when their caches have been cleared and the site upon upload is refreshed so I'm unable to view changes immediately after making updates to the site. I've tried to clear Hummingbird's cache to see if that is where the issue lies, but there doesn't appear to be an option to allow this option. Can you provide assistance please. The web page in question is http://bcrft.com/privacy-policy