Hi There,
Thanks for writing in! Please navigate to Customizer under Header panel and look for the Navbar Font Size and Navbar Top Link Spacing option. We need to adjust this because some of the menu items are lengthy and its breaking the menu bar (pushed below the logo).
To address the sub menu issue, you can add this under Custom > CSS in the Customizer.
body .x-navbar .desktop .x-nav > li ul {
top: 90px;
}
Hope it helps, Cheers!