Issue server/prestashop

The issue of prestashop is just one, that the image and other page not working in https but http, mean that something in database or other place is wrong, that allow http connection instead https connection, also server is set that accept http connection instead only https connection, i need to close the door 80 and prestashop setting all into https no http like url and entire prestashop. I want block cache poisoning and xss attack at cache