Main Menu is missing after update v4.5.4 t0 4.6.2

Hello dear friends. Today I updated klick here for website from version 4.5.4 to latest 4.6.2 version. After update 1.) main/primary menu is missing on all pages and 2.) on mobile view the menu position is different. 1. How to solve issue with the primary menu - 2. Can I turn back to menu style before? Thanks in advance for help.