Hey! i was installing assassins creed revelation on my new laptop yesterday and when i got it installed i was getting ready to type my Username and password. Then i should type my serial code for Assassin's Creed Revelation, it said that the key was already in use. I played it the day before i got the laptop and installed it, and i could play it just fine. But im SURE/ i know that i am loggin in with the right username/email but it still says thats in use. And first time i wrote the assassins creed revelations serial code down was on that account
what can i do