Hello, I have problem with category menu (left menu) in prestashop. I try two way to solve this, but nothing work's that should. First : I try category menu (on hover), wher subcategories is showing...

I've created a new site. And the top tier (root menu) items work in desktop mode. But in mobile mode. They don't. I can access the sub menus in mobile. But when I select the top tier menu - nothing...