Embeded sign Frame-Options issue.

Embeded sign Frame-Options issue.

Hi guys, we are testing the zohosign embedded signing feature, where we display a pdf in an iframe that a user can sign. 
This all works well and good, but we are running into a problem whenever the user clicks something like "download signed document", or the sign icon in the top left corner. It looks like both of those actions attempt to redirect the user, and then we get an error: "Refused to display 'https://sign.zoho.eu/' in a frame because it set 'X-Frame-Options' to 'sameorigin'." 

The host that the app runs on is added to the trusted domains in our zohosign account, but I assume this is something different?
Is there a way around this? Either to customize the displayed iframe content and remove that sign icon, or by configuring a setting that will enable it to work?

Thank you!

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