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=..." frameborder="0" allowFullScreen="true"></iframe>
This appears as though it might be a sandbox location instead of pointing towards the users environment. The other embed code is working fine, just so you know.
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