Post Blog Item Code Injection - script is not working

Site URL: https://kirklandcapitalgroup.com/blog/kirkland-capital-group-approved-as-a-verivest-verified-sponsor

I have a script to add a lead capture horizontal bar at the bottom of a page. This is generated from a lead magnet service, beacon.by.

<script async src="https://beacon.by/leadcapture/embed/62782234ac9019d5"></script>

I have it showing with success via the page header code injection on this normal page on my site. However, I have added the same script code to the Post Blog Item Code Injection and it does not show up on the blog post pages such as this one.

Advice on this? Thanks!