[Support request] Creating a child theme to Dispatch breaks the header grid

Hello!
I have bought the GP and installed the dispatch theme. Since I need to modify it, I have created a child theme using the indication here: https://docs.generatepress.com/article/using-child-theme/
I simply created the child theme following the instructions and activated it without any further modification. The moment I activate the child theme though, the header grid doesn’t show anymore, and the featured posts are shown in a column one below the other. I checked that all the settings are the same in the WP show post called Header.
What can I do to make it work?

Any help is really appreciated.
Thank you

Serena