It seems the issue is more complex than first thought. I have been able to resolve some issues by replacing http:// in the page source with https:// however elements on the pages (portfolio, teams and blogs) are intermittently appearing and disappearing each time the page is loaded or reloaded. Also the size of the revolution slider is not behaving consistently. It should be filling the whole screen, but on some loads of the page it only fills two thirds. This behaviour has been confirmed in multiple browsers.
