Mega Menu Issues

I am having a problem with mega menu when I tried to make some modifications. I cannot get 5 columns across. I had them and when adding items it messed up the ADMINISTRATIVE LAW HEADING and stretched all the items under it into 5 rows.
I have attached an image of it and you can see the issue under civil litigation from main navigation area.
I am not opposed to buying a better mega menu if you know of one that works well with the theme.
https://wrightlawgroupnv.com/