Header Builder – Invalid response from the server. Check your AJAX request.

Good Day,

First of all, I am really happy with the template and use it for years now.

I get the below error in my Header Builder, see below and attachment.
Invalid response from the server. Check your AJAX request.
See the below Youtube link video for reference..

YOUTUBE:
https://youtu.be/J6BJAwJaW1o

I replicate the error on a brand new fake site, it gaves the same error on my live site.

What i have done so far on my live site.

– Disable Plugins, except the needed ones.
– Clear and disbale cache
– Clear and disable CDN
– Clear browsers, include history.
– Use differend browser and private browsers
– Restore backups back from 2024.. Check Databases and restore database from 2024..
– Check Woocommerce Status – Tools and Logs, have clear and delete cache in every settings you can see.

Thanks a lot!