How to make menus work in Joomla?

Question

Joomla

Good day!
There is a small catalog of goods on Joomla 3 with the K2 module - dverisvarog.ru
In the "left menu" admin panel, I dragged 1 of the items (stupidly changed the order), and the nested headings in the "Veneered doors" (menu on the left) stopped working.
Aliases in the menu and categories correspond to each other:

The structure is the same:

Moreover: if you link, for example, Baguette not to "Veneered doors" in the menu, but to "Root heading", then the Baguette page works. We tie back to "veneered doors" - it does not work.
Since the morning I've been trying to fix everything back, but nothing is being repaired \u003d\