We haven't changed that part of the admin panel for a while, so I'm not sure what you mean.  Could you please provide the website url of the page that is not displaying your video?  Also, if you would like, I can check in your admin panel, if you email your username/password.

The problem was that you were using "http" instead of "https" for your youtube urls, and as you now have ssl for your website, most internet browsers will only load secure content and then have an option for the visitor to display unsecure content.  So the fix was to just change the http to https as youtube has secure content, and now the videos are loading!

Sure, you're welcome!