www.wysiwygwebbuilder.com

I am trying to embed my substack blog on my website. Substack provides an html code for an iframe but when I use the html feature to include the provided code it says, when viewing either published or preview, that substack refuses to connect. From what I read this can be caused by a program adding a sandbox to the frame. However when I look this up, WUSIWYG web builder does not add this. Any ideas on how to get it to work. The html code I am trying to add is:

<div class="substack-post-embed"><p lang="en">Refusing to Be Silent by Old Man Hippy</p><p>Why Peaceful Protest Matters More Than Ever</p><a data-post-link href="https://oldmanhippy.substack.com/p/refu ... lent">Read on Substack</a></div><script async src="https://substack.com/embedjs/embed.js" charset="utf-8"></script>

Any thoughts would be appreciated.

I cannot assist you with debugging custom code. but I doubt that this has anything to do with WYSIWYG Web Builder.
The code will be inserted "AS IS", so if it does not work then either the code is invalid or used the wrong way.

But maybe your website is not using https? In that case, the code will not work because it connects to a https website.