UberMenu Mobile Navigation issue

Good afternoon,

My site is: http://jbcharleston.com/

Let me preface this with that I am still very new to this, so please put your kid gloves on.

I’m using UberMenu 2 – WordPress Mega Menu Plugin for my navigation bar and for the most part, love it. I’ve just noticed it has a slight issue with the mobile version.

While mobile, the drop down menu falls behind the menu header and ends up hiding one of the links. I’ve tried to use z-index, but with no luck.

Any help would be greatly appreciated.

Thank you,
Jess