Why don't Virtuemart 3 categories work?

Question

PHP

The bottom line is that there is a website ammafashion.vsego-valom.com.ua . The main one is virtuemart.
It turns out that if you go to the On-line store - AMMA Basic / Home - it gives a 404 error. And the goods work, everything is ok. Only the specific link to the categories does not work. For any. Newly built, old, etc. The link to the category is not working. No way.
All sorts of standard procedures, such as turning off the CNC, looking at htaccess, etc. - I did everything, nothing helped. Googled - a couple of posts on the forum, and they do not answer my question.
It is noteworthy that if you enable the processing of a 404 error in the virtuemart settings, then it gives out not a 404, but an Invalid redirect on the page.
It's the first time I've seen such a thing. I have been working with Joomla for several years, and here it is. I posted the project on fl.ru, people ask for 5,000 rubles, they look, but they don’t find anything. Maybe there are thoughts?

Answer 1

It doesn't seem to matter to you anymore, but it might help someone else.
I had a similar issue. Whatever he did, up to the development of a new site and the transfer of goods to it.
Apparently, the solution is that each product category should have its own menu item that displays it. I was helped by breaking down hierarchical categories into regular ones and creating their own menu items for them.