Hello,
Please navigate to Woodmart > Header builder http://prntscr.com/iyd2pe
Choose the proper header type (your current) http://prntscr.com/iyd333
Find the Cart element in the header builder and set “Sidebar” http://prntscr.com/iyd3h3
Please do the same in the mobile view of your header http://prntscr.com/iyd3v3 check all the elements there.
In addition, you need to disable the option ” Redirect to the cart page after successful addition” in Woocommerce > Settings > Product
Best Regards