Issue with Mobile Menu

Hello,

On our website we have an issue with the menu at the top of our page. (the theme on our site is custom made)

The desktop version works perfectly but on mobiles (or even when the window is reduced to a small size on the PC) the menu links are no longer clickable, for some reason.

Presumably it’s something to do with a conflicting script / plugin.

Has anyone got any ideas?

Thanks in advance!

L