streetchampion on "Google slideshow does not embed despite the fact that it is 'publi'"

<iframe src="https://docs.google.com/presentation/d/1eXExVGHF1G_8dqCshU1JNCxiScOkjDBn5Zux0NmYI_I/embed?start=false&loop=false&delayms=60000" height="389" width="480" allowfullscreen="true" frameborder="0"></iframe>

the above code disappears when I click publish. I have re-copied and pasted into the website using the 'visual' tab, so you can see it. Click
http://communitylearningbank.org/test-slideshow/