Mobile Menus not all opening on click

I see the option to open and close the menus on mobile… My question is some of them do open and I can see all the pages to click on within that menu. Others don’t open. Why is this different?

Feel free to play with the menus on mobile – you will see that only the Rentals and Tools will open to reveal other pages to click on.

The page I need help with: [log in to see the link]