"Exists in your account" while I do not own the game.

Submit a ticket to them.

You can wait, or buy the game. Its a problem on Steams end, with it listed as owned in your account. Until Steam removes it from your recently played list, nothing SG can do.

It doesn't really matter when you created your account here. SG gets your game list from Steam afresh everytime. If you played during the free period, it may take 2 weeks for Steam to drop the game from that list.

It must disappear from your recently played list (2 weeks).

have you played the game through the free weekend? than it will stay for two weeks..

This is a known issue with free weekends and guest passes. All that can be done is for the user to remove any game content they may have on their computer and resync their SteamGifts account. It can take up to two weeks for Steam to update the user's library to reflect they do not own the game, however. Sadly, this is a problem on Steam's end and we can't change it.

To prevent this happening in the future, manually sync your account mid-week, like Tuesday or Wednesday. This will reset the 7-day sync to work on the day of the week you last synced, so it won't sync on the weekend unless you do it manually.

Thank you for all the responses.

I will wait for 2 weeks and then try again. The reason, why I want to be gifted rather than to buy the game is that in my region I can only get the low violence version, although I'm already 25 years old...

that happened to me with killing floor...

happened to me too...never touched those "free-weekend" games.

it's steam's fault, those games always appear in your account as you would actually own the game.