I have an issue with the Mobile Menu (Hamburger Menu) for my store

(1) There is an "important Links" menu (which is blank) I do not have this anywhere in my store
(2) Categories drop down stops short (to the screen of mobile phone), you cannot scroll down to the last category

I have searched everywhere to find "Important Links" to remove this with no luck and cannot figure out why Categories does not scroll down from the menu

Zen Cart 1.5.6a with Bootstrap Version 2.0.0a

Some assistance would be appreciated

My site here:

https://arxvaldex.com/shop/

Thank you