Hello,

Please navigate to Woodmart > Header builder http://prntscr.com/iyd2pe

Choose the proper header type (your current) http://prntscr.com/iyd333

Replace the existing menu element with this one http://prntscr.com/lq0cgd

You have added your menu by means of secondary menu element and it disappears on the sticky header. You need the Main menu element.

Best Regards