Dropdown menu customization not working

https://wordpress.org/support/topic/dropdown-menu-customization-not-working-2/#post-11977993

please read this topic it is mine also.
I described my problem there
https://prnt.sc/pc5owx

how could I remove the overriding happening from HTmega plugin on oceanwp theme?
I don’t want to use a custom CSS as I prefer to use the customization settings from the theme’s panel active where I can adjust through it directly anytime.
if there is a way of course.

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