Can't embed VIMEO code in VIDEO INSTRUCTABLE, can't enter contests
Hi, I am trying to create this VIDEO INSTRUCTABLE: https://www.instructables.com/id/ETCXMR0HMEXSW8C/
but I can't get the page to save the VIMEO embedding code (<iframe src="//player.vimeo.com/video/76296797" width="500" height="281" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> <p><a href="http://vimeo.com/76296797">Frankenstein Mad Science Lab - film set build</a> from <a href="http://vimeo.com/user21594626">damian zuch</a> on <a href="https://vimeo.com">Vimeo</a>.</p>)
ALSO: I tried to enter this in the Halloween Decoration contest but I get this message: "Sorry, your instructable isn't eligible; it may have been published before the contest entry date."
The dates are right, I don't know what's wrong?