Thanks for using Themeum Educon Theme. After installing the theme and importing demo data. Follow this tutorial to look like demo site:
Download Educon WP Megamenu theme- https://drive.google.com/file/d/17Sz9s_LNkakOnfEdRxW_D9Ab9jkifHO2/view?usp=sharing
Follow this tutorial, how to import Mega Menu theme- https://www.themeum.com/docs/mega-menu-themes/
And this- https://www.themeum.com/docs/set-mega-menu-site/ (check this carefully)
For submenu, watch this video: http://take.ms/HtGtt
Watch this for the tabbed menu: http://take.ms/wrRha
I hope, your mobile menu works well. If not, create for me an admin account. I’ll assist you personally.