Mega Menus (Deactivate?)

I am trying to use the main menu as a simple drop (not mega menu), and everything I can find simply references that I probably have ‘mega menu’ option turned on. I can’t find where to deactivate this, or even confirm this is my issue. In the meantime, no sub-menu items are showing, even though I have them properly in appearance>menus. The site is https://www.wineonthedime.com/. Any help is appreciated.