Thanks for that info but I do not have that “Check to disable header top” option.
At that customization tab I see this:
Header Top Options
Check to fix header to top [with a checkbox to the left]
Header Top Left Sidebar Widget Area Width
This is Width for Header Top Left Sidebar Widget Area. Once this is adjusted, the width for Header Top Right Sidebar Widget Area is set automatically. in %
[then a box to put in a value]