Can't attach k2 tag to k2 menu?

Question

Joomla

Such a situation
Created K2 tags, connected them to a lot of materials in the category.
Now I need to change their URL, I think to connect the tag to the menu and make my settings there.
I create a menu, select K2 tags, but I only see regular tags there, I don’t see K2.
I need exactly the K2 tags, tell me why so, maybe somewhere there is no check mark?