I tried creating a header according to the tutorial with ELementor

Hello @seun,

1. Upon reviewing your website, we noticed the following error: https://gyazo.com/fce73f09909ff638e092484359cf5cc9. This issue requires you to contact your hosting provider, as it is not related to our theme support.

2. This problem in your topic may be caused by backend script errors. However, if you wish to open the Header builder in Elementor, you can do so by navigating to your Dashboard -> Elementor -> Theme Builder (https://gyazo.com/943d1c3f5d492d062387d050716b5fb3).

Please note that you need to have one of the additional plugins installed for the builder to function correctly: PRO Elements (free version) or Elementor PRO (paid version). More details about our XStore builders can be found in our documentation: https://www.8theme.com/documentation/xstore/xstore-builders/xstore-builders-getting-started/

If you still require our assistance, please provide us with temporary wp-admin access.

To grant WP-Admin access, please proceed to create a new user account with an administrator role through your WordPress Dashboard. Once the account is established, you may securely transmit the username and password to us via the Private Content section designated for this purpose.

Best Regards,
Jack Richardson
The 8Theme’s Team