Apprarently, a recent update caused the embed for iframe to reference an incorrect URL: <iframe width="680" height="510" src="https://app.blob.core.windows.net/embed/snapshotEmbedHost.html?embedId=....
MAS13
Helper I
Helper II am also having an issue with this. Spoke to support and they are clueless about this problem. They said they were not told about this change and they believe that it was a mistake globally.
I have tried the other URL and without the Iframe it is useless essentially. That will only give you a link to click on.
Hopefully they will get this straight soon.
This was actually the first post I saw for the last 10 days about the issue.