Hi,
When I scroll down the webpage and stop in the middle of page, the sticky menu shows up, but the primary menu is stacked up because the logo is in the same row and no space for main menu , see picture below.
Firstly, you can go to Dashboard > WoodMart > Header Builder > there edit your current Header Layout.
In the main header > edit the main header and add the elements in the main header and make it sticky For example you can add the logo, search and other elements.
In the header bottom you can add the main menu elements and make it sticky.