Sorry about trying to add you on Steam. Couldn't reply to your message on SG because you blacklisted me. In the Poof/Poöf case it's very easy to check which one you have. Do you own the soundtrack? If not, you have Poöf. Also key names can't contain special characters afaik so that's why Poöf keys are called Poof. (And key names don't have to 100% correspond to game names anyhow, sometimes they are quite different.)

In general since you get your keys from Feudalife you know how to get the name of already owned keys with either pressing F12 in browser or with the SteamDB extension. (Otherwise you wouldn't be able to give them away here.) Both methods will give you not only the name but also the subID the key activates. You can then easily check the sub on SteamDB. Indiegala Poöf drops are always subID 28571 which is basegame only and not 44833 which also activates the soundtrack and activates as 'Poof Bundle'. No need for the winner or IG staff to do it, this info is there at the same place where you got the game name from.

https://steamdb.info/app/243280/subs/
https://steamdb.info/sub/28571/

You can easily check the subID of the key you gave away recently if you want to verify the above info. Do with it as you please, maybe the subID stuff will be useful for your future giveaways to find the correct SG listing. I won't bother you about it any more, I promise.

Edit: And if you want to fix the Poof giveaway go to https://www.steamgifts.com/support/tickets/new and select 'Change Giveaway Game' from the dropdown menu.