According to the rules, all wins must be activated on the winner's account.
By marking the game as "Received" you acknowledged that you indeed received and activated the game you won to your Steam account. When we see the "Received" mark among your wins, we assume you've received the game, and if we don't find it on your account, you will get suspended for violating one of the basic site rules which I quoted below:

 | Won gifts should be activated to the Steam account used during registration, and they should not be regifted, traded, or sold.
 | Winners should correctly mark their gift as received or not received within one week of the giveaway closing.

Which games did you remove?

이런 답변을 받았었어요 (벌써 5년 전이네요..-_-;)
이용정지의 제재를 받는거 같습니다 삭제하신게 있으시면 복구하셔야 할 것 같네요
라이브러리에서 삭제한 게임 복구방법 > http://playwares.com/gametalk/48023997