Help with Content Locker on Elementor

I'm an HTML noob and I'm having a problem integrating the OGAds Content Locker with a button in wordpress. I'm using Elementor to edit my site too. I've installed the Header and Footer Scripts plugin.

I've placed this script in the header "<script type="text/javascript" src="og.php?tool=cl&toolarg=s&id=408e727723c7ab02f10e691b55840b8a"></script"

I wanted to use my own domain so I've uploaded the og.php to my media library. I don't know how to add the button onclick="og_load();" though on my elementor button.

I was also given this standard link "og.php?tool=cl&id=408e727723c7ab02f10e691b55840b8a" but I don't know what to do with it.

Any ideas?

Did you have a look at this; https://docs.elementor.com/article/59-button