Mobile menu doesn't scroll

Hello, on the my menu I have quite a long list of links and on mobile it has to be scrollable to see it all. But I can’t make it work - I have read this guide and tried to implement but it didn’t helped: [TUTORIAL] Make mobile menu SCROLLABLE

Can you have a look and give me any advice?

Here is my site Read-Only: Webflow - AKU)

By the way I have two menus - one for non-mobile (Navbar-G) and one for mobile (NavBar G Hamburger). So “NavBar G Hamburger” is the one to look at.