Catalogue discount and sold out label was not applied

[aircrescio]

Hello, i have a fresh installation of PrestaShop 1.7.5.2 and use Alysum theme.

I have a Big problem:

Catalogue discount (20% on WOMAN category) was not applied on products of that category. I can see in backend of prestashop 20% rule in the price tab of product page, but in frontend nothing happen. Same behavior for OUT OF STOCK labels. In attachments more details...

Here category url of 20% of discount:
https://pasinetticalzature.it/DONNA-650

Here product with 0 quantity in stock (every variations are 0):
https://pasinetticalzature.it/DONNA/SCARPE/Tacchi/Decollette/nacree/DECOLLETE-IN-PELLE-NERA-CON-CINTURINO-E-TACCO-SVASATO

I hope in someone can help me!!! 
Thanks

Diego