Embed code for Construct Arcade isn't working

<div style="display:inline-block;text-align:center;">
	<iframe style="width:980px;height:550px;border:0;" allowfullscreen="true" msallowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true" sandbox="allow-same-origin allow-popups allow-scripts allow-pointer-lock allow-orientation-lock allow-popups" src="https://games.scirra.net/games/14926/636212483752270000/play?utm_source=ScirraWebsite&utm_medium=EmbedIframe&utm_campaign=ScirraArcade"></iframe>
	 
	<p style="font-size:12px;">Hosted by the <a href="https://www.scirra.com/arcade/action-games/woodman-survival-challenge-14926" target="_blank" title="Addicting games">Scirra Arcade</a></p>
</div>[/code:344ttrk5]

When I pasted the embed code into the HTML section of google sites, the Construct 2 logo would load the game and then the game would just turn black and unplayable after loading.  I even looked up tutorials for HTML in google sites and in all the tutorials, this wasn't a problem.

Can anyone help me fix this?  Here's my website with the game in it: [url=https://sites.google.com/site/boneysgameroom/select-a-game/woodman-survival-challenge]https://sites.google.com/site/boneysgam ... -challenge[/url]