Only demo usage

Hello. I am here in Ubuntu 14.10 Kylin, I should be playing minecraft forever beacuse i am very experienced in minecraft and i have registered account. I payed minecraft to play it forever. My account name is NunoLava1998.
Here is what happens:
In Windows (which is when i buyed): Registered, payed account. can play forever.
In Linux Ubuntu: Demo Usage, Did not pay. Registered.
What is this bug???

(FIXED)