testing iFrames

几周前,我测试了嵌入一个Adobe火花page as a kind of 'microsite' example for a project on indonesia.chevron.com. Inserting the embed code below worked then, but after a recent update the page now fails to load. What changes have occurred in the past two weeks that could possibly be causing this? Is there a domain whitelist for embedded code, like how Qualtrics is allowed to display data?