nunoduarte Hi. I cannot find it anywhere, but I've found an unique class "product-itens" which I shouls be able to locate, but I thought I'll ask You first. Do You have any idea where this can be coming from (I mean if it was manually created)?
Additionally please install Akeeba backup. I'll make a copy of the site to be able to scan files if looking for the "product-itens" to figure out how and where the date format can be changed.