QUESTION: I don't have a PIN - do I need to register?
ANSWER: In short, no. It sounds like you purchased the uninsured version of our product, which does explain the lack of PIN card. Without a PIN, you cannot register.
But you still do have the ability to use our LIFETIME WARRANTY program which you can take advantage of here: https://www.fortressup.com/products/fortress-warranty-replacement
Lifetime warranty is separate from the OATH. They are 2 completely different things. One (OATH) is insurance, the other gives you the ability to get screen protector replacements for a much reduced price.
The PIN card only comes with our OATH products. If you see a $150, $200, or $250 OATH on the front of the packaging, then you will have a PIN card. If not, then you are not supposed to have a PIN card and all you need to do is keep your receipt for when you need a replacement screen protector :)