Embeded Video Tutorials not working

Hi, I'm trying to set up a couple of the WP training videos on separate pages on my Wordpress site. I've installed the integrated videos plugin, registered my site, an API was created.

I downloaded an individual video (the galleries video) embed code and pasted it in the html (now called text) tab in my editor, but when I publish it, I get the message "Access Denied".

Not sure what I'm doing wrong. Everything looks to be in place, but still no luck. Help please.

Thanks!
Laura