Yes, the latest version which I have downloaded from themeforest.net
Link to my site: http://www.taxipasdiploma.nl
The content is also overlapping with the menu:
1- How can the content start below the menu? (desktop mode and alos possible mobile mode))
2 – How can the hight of the menubar be fixed when I scroll down?
3- Is it possible add to a button easily without CSS ? (in WP bakery header element it is possible)
We just tested your website and couldn’t see any overlapping issues (see the screenshot below).
Regarding your questions: