I have the same problem as the opener mentioned in point 1.
On mobile menu, once a sub-menu is opened and clicked, clicking the sub-menu again to close it doesn’t work. It reloads the corresponding sub-category itself. In other word’s, there is no option to simply check the sub-menus of a menu, as you can’t make the step back. I think this is highly annoying for potential buyers. Would appreciate a quick fix.