I use an external plugin called aerocheckout.
In elementor everything appears right. When I post, the checkout does not appear. Only a gray stripe appears.
I have already contacted them, and they told me that the problem is the topic.
I’ll send a picture of how it appears in the elementor. And I’ll send a picture of how it appears when I publish it.
Please make the full backup of your site as well as the Theme settings export and check the issue on the Storefront theme to detect if our theme causes the problem. Storefront is a free theme developed by Woocommerce.