How to embed in Omeka?

I have tried embedding various things, using the embed code generated. For instance: ThingLink, TimelineJS, StoryMapJS. These all embed beautifully on my WordPress site, but do not embed on my Omeka site. I have tried embedding in the Simple Pages, using the html editor window. What am I doing wrong? Or is it just not possible to embed such things in Omeka?

A common cause of this problem is that some HTML is disallowed under Settings -> Security. Check that all the elements you need for the codes are allowed (or simply disable the HTML filtering.

Thanks, disabling the HTML filtering worked.