Adding html widget with html/javascript from iubenda.com privacy banner system it doesn't show correctly

Hello.
I need to add a privacy banner on the top of the page that disappear after a click or simple page scroll, using the iubenda.com privacy system.

The code works correctly using wordpress joomla etc.. but in hype3 if I add the html widget with the code, it show only the button with privacy document, but no banner appear on the top of the page.

Also I have tried to add manually in the html file within the body section as indicated from the iubenda.com guidelines but nothin appear on the top...

How to solve this?