Hello,
01. Please navigate to WoodMart > Header Builder, edit your current header, and configure the Browse Categories element as shown here: https://prnt.sc/GAEwUkFgxBz1
To modify the menu items, note that these are pulled from Product Categories. You can manage them by going to Products > Categories and editing the respective categories.
02. On our website, in your account, you can see how many activations you have. Also, in your account, you can deactivate the old license and use it for the new domain.
You can manage all your purchase codes in your account on our website: https://xtemos.com/my-account/
Best Regards,