Please am having similar issue;
The Mega Menu shows on desktop quite alright, but on mobile view, the submenu items are hidden behind the homepage slider once the hamburger is clicked. I use a Premium theme named: “Blessing”
I also noticed that the mega menu feature still displays even on mobile view but in a weird manner, even though I checked for it not to display on mobile devices.
Please advice how I can have the menu displaying correcting in front of the homepage slider. If there’s a css code to be added, please help me with such code as am quite new in the design business.
My website URL: https://www.vifaworldwide.org
Thanks in expectation
Regards.