Changes in header.php does not show in browser source code

I am using Cloudflare and WP-Rocket and as far as I understand everything should be set up correctly.

Issue is that when I implement scripts (like GA4, GSC & GTM) it does not show in the browser source code.
I have tried clear/purge everything from WP-Rocket and Cloudflare but still nothing shows in the browser. I have also tried refreshing and hard reset.

Everything seems to point to a caching issue, but clearing cache wont help.

Can you help me figure this out? :slight_smile:
Thank you.

Website is:

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