Navbar not displayed in tablet and mobile view on click

Hello everyone,
First time posting here, I’ve been trying for hours, but I can’t get past it, so I’ve come to ask for your help.

On the navbar I’m making, when I click to display the menu in tablet mode and then in mobile mode, it doesn’t appear.

I’ve added a background and a font color to my menu (modified by selecting my button and clicking “show”).

Could you please help me?

Here is my site Read-Only: [][1]
[1]: Webflow - Travolness