Using plugin Megamenu to split menu items

Hi all,

I am using the plugin Megamenu to try to split the menu items to each side. I have gotten that done, with a few things to still work out, but my problem is it was also showing the mobile menu. When I use display: none, it goes away but the mobile menu itself is messed up. The documentation for the product indicates that it is compatible with DWB. Any ideas.
Note: I am modeling this after website.

My site is

Many thanks in advance.