Hello,

I saw the screenshots you attached.

Sorry but there is no option in Theme Settings available to remove the columns in the header.

You can try enabling the row flex option for the header row by editing it.

Screenshot for Clarification: https://gyazo.com/0931878c084cfc6d541df636494de427

https://xtemos.com/docs/woodmart/header-builder/header-rows-flex-layouts/

Best Regards