OptOut in a Joomla Article


the privacy policy is a Joomla article in my shop. The Matomo part is in the middle of the article. The code

<iframe frameborder="no" width="500px" height="250px" src="https://www.myshop.com/sites/index.php?module=CoreAdminHome&action=optOut&language=de"></iframe>

doesn’t work within the article.
What code should I put in the article ?



Wit the settings How to add an iframe in a Joomla 3 Article | InMotion Hosting leaves the editor the element iframe untouched.

But: I see a piece of my shop not the checkbox. please help me