corsicorsari Having viewed your site in firefox, chrome and safari browser. The issue is apparently seen only on chrome whilst the video autoplay is working fine on other two browsers.
There could be some changes required in this file as you are using Hero Style Video in JA ACM in order to adhere to autoplay policy changes in newer versions of chrome:
/templates/uber/acm/hero/tmpl/style-4.php
The solution given here by @saguaros should work although file path and coding structure is different 🙂
Auto-play in Iframes requires a delegation of the auto-play approval from the origin by adding a new HTML attribute “allow=”autoplay”” to it. Otherwise, unmuted autoplay will be denied.