Personally, I didn't take part in this Giveaway but sometimes it happens. If your game key isn't valuable enough, I suggest you give up on that but if it's important for you, you can contact Misty and show her your proof. She will help you out :)
in 3 steps
Choose the game that interests you and play itfor free.
Every game has some quests for which you will receive Soul Gems.
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
You know that on Gamehag you can get real rewards for free, right? Join us, complete walkthrough and get your chest!
I just took part in the GA Random Games giveaway and got a duplicated key for "Complementary Reviewer Package" (this sub: https://steamdb.info/sub/438008/apps/). Did anyone else get a dupe key?