Embedded app does not work properly

Dear community,

I am preparing an app in the discovery style for my students, so I am embedding it into my moodle page (or even into a plain html page).

The problem is, once it shows in the webpage and I click on it to start playing around, the app seems to freeze, and it doesn’t allow any interaction.

Here is a screenshot.

Do you have any idea of what could be happening?

Thank you very much.