¿La lista de productos no se muestra en el catálogo?

[harryo69]

Hello,
I'm trying to edit the product list, but when I go to the catalog and then to the products, the products tab is grayed out and no products are displayed.
In the front all products are displayed to add to an order and print receipt etc, but why are the products not shown in the catalog >> products?
If I go to the catalog >> categories, they all show up correctly.
I am using Sysme v4.94
Thanks for any help.