(Wordpress Avada Theme) Anchor links not working on mobile

I’m building a website for a client in Wordpress using the Avada Theme and for some reason, my nav bar anchor links are not working at all on mobile (when I click on one of the items in the dropdown either using Firefox’s responsive view or my actual phone, it just goes to the top of that page, not to the section where the ID is), even though it works fine on desktop.

This is the website in question: http://harcourt.epicdev.co.za/

It’s the items under What We Offer that I’m trying to get to work.

Thanks in advance!

Contact with your purchase item author @ThemeFusion @ThemeFusion_Support