Upgrade from x to pro creating header

Hello,
I read this article about updating from x to pro and followed your advice but can’t solve the problem.
https://theme.co/docs/converting-from-x-to-pro

I installed a new license of pro and also the child theme (this one is active) and removed the cornerstone plug-in.
I also cleared cashes and saved.

I can not create a header or footer in cornerstone.
Hope you can help.
Kind regards, Astrid

Hi Astrid,

Thanks for reaching out.
It usually comes automatically once the Pro is activated, and you can find it inside the Cornerstone builder.

If that is not coming, there might be some different reasons behind your issue. I want to suggest troubleshooting the following common issue to help us recognize the reason.

1.Theme Related Issue
2.Plugin Conflict
3.Theme Update related issue
4.Child Theme Related issue **if you have activated it.
5.CSS/JS Customization
6.Disabling Cache
7.Disabling CDN

If you discover that an issue is coming from a custom code or 3rd third-party plugin, kindly consult with a developer or contact the plugin author. Please note that we do not provide support for custom codes and 3rd party plugins, unless you are subscribed to One. If not subscribed, kindly consult with a developer or contact the plugin author.
Please note that we do not provide support for custom codes and 3rd party plugins, unless you are subscribed to One service.
If none of the above helps, please provide login credentials for your site in a secure note to examine it further, including:

– WordPress Site URL & Login URL
– WordPress Admin username/password

To create a secure note, click the key icon underneath any of your posts.

Thanks