Hello,
To select which Menu should appear on your Site for the Desktop or Mobile view, you can go to Dashboard > Woodmart > Header Builder > Edit your Header > there edit the Main Menu element > and here you can select the Main Menu which should appear for the Desktop as well as Mobile Menu. See this image for reference: https://postimg.cc/PpR1sg4b (Desktop and Mobile – Main Menu)
For the Categories Menu, you need to go to Mobile Layout of the same Header Builder > there edit the Mobile Menu element > under that you can select which Menu should appear for the Categories one in the Mobile view. See this image for reference: https://postimg.cc/VJXyS106 (Categories Menu – Mobile View)
If you still can’t find or change it, please share your Site’s valid WP-ADMIN Login details with us so that we can change it for you.
Best Regards.