Ques/Help iframe integration (wordwall)

[Can]

Hello,
I am not sure if I have opened this topic in the right place. If it is wrong, please move it to the appropriate place.
I want to add the iframe code of the wordwall site to my site in Xenforo. how do I embed iframe codes in the topic? When I link outside the site, users escape from the site. There is no interaction.

The following oembed does not integrate.

oEmbed ​

We support oEmbed. This API allows other websites to display embedded Wordwall resources when a user posts a link to that resource.

wordwall.net

HTML:

<iframe style="max-width:100%"...

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