Had 3 BTC in MT.Gox,,

Yes i was dumb enough back then to keep my coins in their website, i was trading a lot and left 3.3 BTC in mt.gox when it was "hacked". I had a lot of personal issues in the last few years that caused me to neglect getting after it, drugs, death, etc. I have now fixed myself and am sort of coming out from under a rock. I did, years ago receive the little japanese mailer in my real life mailbox, it is now lost. Is there any way i can still get my BTC back? Am i too late to get in on it? Yes, I am aware that i am super late for this train. I am confused by the mtgox website. Can someone show me to guide or something to sign up for the repayment selection? Any help appreciated as this money would be needed right now. I am