This is a problem I’ve faced many a time, when working with complex mouse click interactions. I’ve just taken a look at your setup and can see a solution:
Here’s the problem
At the moment your nav menu point is set to open on click 1 and close on click 2, the problem is that when a user clicks one of the nav links this also closes the menu. So when you go back to open the nav menu you are actually on click 2 still which doesn’t do anything as the menu has already closed… Confusing I know!
Here’s a solution
You need an additional trigger element for closing the menu with top left cross. This way you can have menu open and menu close elements, both set to animate with 1st mouse click. You’ll just need to make some additions to your existing interactions for Navigation Open and Navigation Close to include the hiding and showing of these 2 elements. The aim is to get everything working on 1st click and removing the 2nd click being used at the moment.
Really hard to explain this without re-creating it and demonstrating, hopefully you can make sense of what I’m suggesting, but let me know if I can help any further??