cant bksy subscribe to gyst from inside iframe

blog/do-you-know-the-drill/index.html

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 <h1 id="do-you-know-the-drill">Do you know the Drill?</h1>
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+<p>If bksy doesn't want you to subscribe from the iframe, follow this <a href="https://gyst.leaflet.pub/" target="_blank" rel="noopener noreferrer">gyst.leaflet.pub</a></p>
 <!-- mini gyst embed -->
 <style>
 .flex-container {