I can't add a link to the header area

I cannot add a simple hyperlink to the header on this site: http://sbccikits.staging.wpengine.com/demandrmnch/

Straight html, Visual Editor widget - nothing works. I added a video in there so you can see that doesn't even play.

Any ideas what could be blocking the ability to add a link, and how I can override it? Thank you!

(feel free to try it out, this is a dev site.)