Iframes usually use the content-policy of the page. However, sometimes it's possible that an iframe requires more rights. Using the Iframe Security Policy shipped with Buttonizer you can select the policies required for the page or site you want to embed.
To read more about Iframes and permissions, check out the MDN Web docs.
If you receive an
<iframe script to embed and it contains an
allow attribute, Buttonizer will automatically add the required parameters. If this did not happen, start adding the required policies manually.