My Minecon 2016 Cape

Recently I found out that I could redeem my 2016 cape, so I searched and searched through my dads email since he is the one who bought the tickets and I found it, my dad has sold one of the capes he said yet he told me mine he didn't sell. Every time I click on the link it sends me to my Mojang account and nothing appears accept my account info. So I click on "Edit/Remove Account" amd still nothing accept how long i've been playing.