Was the Lazarus listed as a line item on the order when you put it in originally? If your cart qualified for the promotion it should have been added auto-magically.
Was the order greater than or equal to 100 USD before tax and shipping? I initially made this mistake.
All of my orders showed the Alt Lazarus as a separate line item with a price of 0.00 in the cart, order confirmation, shipping confirmation, and packing list / invoice on the package when it arrived.