I can't make this snippet work on a test instance of NOPCommerce 4.20. I added it on just before the </body> tag of ./Views/Shared/_Root.Head.cshtml but it won't display. Any suggestions?
<script>(function(d,a){function c(){var b=d.createElement("script");b.async=!0;b.type="text/javascript";b.src=a._settings.messengerUrl;b.crossOrigin="anonymous";var c=d.getElementsByTagName("script")[0];c.parentNode.insertBefore(b,c)}window.kayako=a;a.readyQueue=[];a.newEmbedCode=!0;a.ready=function(b){a.readyQueue.push(b)};a._settings={apiUrl:"https://xxx.kayako.com/api/v1",messengerUrl:"https://xxx.kayakocdn.com/messenger",realtimeUrl:"wss://kre.kayako.net/socket"};window.attachEvent?window.attachEvent("onload",c):window.addEventListener("load",c,!1)})(document,window.kayako||{});</script>