Imported Charge theme - Mobile menu not showing up

Hi guys,

Hope you're well and safe.

I am having some issues with the mobile menu after importing the Charge theme within the library.

I tried activating off canva menu, modified the colors, added the css code for the slideout overlay color below but still not working. Weird is that if I go to Customize and modify the size of the screen to mobile - the menu shows up fine but on an actual mobile device all I get is a dark, empty slider.

.slideout-overlay {
background-color: rgba(0,0,0,.4);
}