Can't see "Same address for shipping" on checkout

-- url of the page with the problem -- : www.petloc8.it/
-- HikaShop version -- : 6.5.0
-- Joomla version -- : 6.1.1
-- PHP version -- : 8.4
-- Browser(s) name and version -- : All

Hi,
In www.petloc8.it/ when I go to checkout, the check box for "Same address for shipping" is not visible. But in the Hikashop configuration > Checkout > Login, the fields "Ask address on registration, Show 'same address' checkbox, Same address checkbox pre-checked" are all setted to YES.
ibb.co/Wp3SG4qn

Hi, I've solved. The products are weightless so I've checked Force shipping for virtual / weightless items.
Thank you