You can implement Privacy Pillar's applications on your website that you have constructed using ImpressPages, by adding the custom JS to your website code through the ImpressPages dashboard. To be more precise, you must add the production CDN script to the header.php file.
The following steps are common for implementing Privacy Pillar's Cookie Banner, Subscription Consent Banner, and Social Fortuna.
Check that the desired module appears on the website properly.
Note: If it doesn't appear, try hard-refresh (Press Ctrl+Shift+R) and check it again.