Cannot activate on Steam

[zilis]

Hello,
I bought the game from a trader in a gift form through Steam, I've activated it on my Steam account, when I try to play it says "You don't have access to Shootmania Storm, please enter a key to gain access to this title." when I try to enter the CD Key I have in Steam it says - "Key registration failed. This game key requires Steam."
What should I do?

[Alinoa]

I bought the game from a trader in a gift form through Steam

Can you please provide us with the link that allowed you to buy ShootMania Storm?

[zilis]

I bought the game from a trader in a gift form through Steam

Can you please provide us with the link that allowed you to buy ShootMania Storm?

Sorry but I'm not really sure what do you want from me, I just traded it through Steam.
Here's a picture - http://i.imgur.com/0vuCo51.png

[Cerovan]

Actually the question is where have you bought the game in the first place?

[zilis]

Actually the question is where have you bought the game in a first place?

http://www.tf2outpost.com/ from a random person , traded using the Steam trading system.

[Cerovan]

Have you created a new account or have you connected to an existing ManiaPlanet account when you have launched the game for the first time on Steam? In the second case, do you use the same ManiaPlanet account?

Thanks!