I revert back, but i still have these problems:
when I put products without variables is all ok http://benessere.ribesgrafica.com/shop/nourifusion-crema-levigante/
if I put variables the quantity and add to cart buttons do not shows
http://benessere.ribesgrafica.com/shop/infuso-a-base-di-erbe/
I read many doc online about woocommerce but I do not find the solution