Can't enter to Magicka giveaways

Steamgifts will think that you own it, as long as it shows up in your library (from your Steam homepage profile, not your Steam client library) or in your "recently played" list.

It will take about two weeks to Magicka dissapear from the list. Syncing account won't help because it's in your recently played games. All you can do is to wait. Had same thing with Left4dead.

So, all I can do is wait. Thanks!