Is there any particular reason you haven't activated Monsti? If you don't fix that, you will be disqualified from the win, should your name get picked. You are required to activate everything you have won, on your steam account.

Yes, you should add the game to your steam account. That way, it will no longer show up as a win you didn't activate.

The general reason I had the stipulation of having activated 100% of the wins, and having no duplicate wins, is both of those things are the main rules of this site. Breaking them could get you a 5 day suspension per violation, no matter how old the violation is. Even if people on the site don't catch you, there are people that do send user reports through the ticket system on this site regarding the violations.

Also, whatever you do, don't go and change the feedback of the item to not received as a means to remove the "non-activated" game from your record. That falls under misuse of feedback, and can get you banned from this site permanently. You are just best in your case, to buy the game on steam or activate a steam key of the game you get from elsewhere. (not this site, as that would be classified as multiple wins.)