I have just setup the Gute Pro theme with Child theme and went through the setup, but any section of the menu that has sub-menus, become in operational. There is a nice animation under the menu label when it gets the focus, but nothing happens when you click on it. I am using WP 5.6.2 and Chrome 88.0.4324.190. I get the same results with Mozilla FireFox and Microsoft Edge.
The URL is avimex.ca/wp