Sub menu width

Thanks for the plugin, loving it so far and considering upgrading to the full version. Just one issue, and I have looked around to see how I can resolve this without any luck.

Sub menu items, are not stretching across the full width of the menu bar, they are only stretching the width of the first column. I’ve tried following these instructions:

https://www.megamenu.com/documentation/adjust-sub-menu-width/
https://www.megamenu.com/documentation/how-to-distribute-sub-menu-items-over-multiple-columns/

Screenshots here:

Menu width

Am I missing something really simple here?

Thank you

Steve

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