Hi,
1- We know that. please check this example of a category with 2 subcategories
HERRAMIENTAS, PAISAJISMO Y FRAGS – PEGAMENTOS
– HERRAMIENTAS DE PROPAGACION
There is the category HERRAMIENTAS PAISAJISMO Y FRAGS and the 2 subCategories PEGAMENTOS and HERRAMIENTAS DE PROPAGACION for the category, with products in them and they are not displayed in the category list of the store TIENDA VIRTUAL. You can see only PEGAMENTOS like a category and not subcategory. This is on example please check it again.
2- We still have problems with the permalinks. If you change the settings to another option that is not the Defult, you will see that you will not be able to open a category in the shop category or product category. We not that you did same changes in the permalink settings but you didnt notes the error when you try to open a category. Note that the problem is when you try to open a product category and when we put the page in maintenance mode.
please check this problems again and thanks. you still have acces to wp admin and ftp.
thanks