drop-down menu “Zoom Lite”

Hello!
I really like theme “Zoom Lite”! However, there is one problem: when you enter the menu and choose the drop-down menu item in the version for mobile devices, the page immediately reloads. Possible solution: when clicking on the name of the parent category is opened this category (as is now), and when clicking on the arrow next to the name of the parent category unfolded block with the child categories.
Can you do it?
Sincerely, Vasilii