Need menus fixed

Please help. Menus in WordPress suddenly stopped working and I don't know why. ## Deliverables The menu used to work on our main website ([login to view URL]) but they stopped working and I need you to fix it quickly. I'm sure it's an easy fix for someone who is a WordPress expert. I'm hoping that person is you. No redesigning needed only the menu's to get working. PLEASE DO NOT LOSE ANY OF THE DATA SINCE THIS SITE IS LIVE. NOTE: 1. We migrated the theme to another website ([login to view URL]) so you can compare the code for the theme and see what is missing on the main site. 2. I have attached a video so you can see what the problem is. 3. This fix is urgent since we have lots of people visiting the site on daily basis. 4. There are no design changes needed - just the menu needed to be fixed. 5. The theme is called "Intermezzo"