Top Navigation Menu Broken

Hello, I just added another page to our top-menu navigation and it broke our top menu. See the page: https://studyabroad.wp.d.umn.edu/ I went in to remove the page I added, and it still didn't fix the issue (which as worked in the past.) I also was under the impression that since we purchased the 'pro' version, we had an unlimited number of menu items/pages. Any info at your earliest convenience is greatly appreciated. Thanks! Stephanie Bartsch sbartsch@d.umn.edu