no header on mobile

hi!
i installed kadence theme and tuned it up. all worked good and as presumed. after while i decided to add button to the off-canvas navigation area and mobile header disappeared… since than i can not get mobile menu, logo and so on back to screen. i tried to install Kadence Starter Templates and reset customizer settings. it helps, but i do not want to setup all theme settings from scratch! pls help me to solve the issue!

The page I need help with: [log in to see the link]