About Blacklisting the peoples that don't redeem the game that won

Pretty sure the winner can still view the key from the Giveaways Won page even if you blacklist them. Unless I misunderstood your point. Also if a winner marks the game as received but doesn't activate the game, you can report them.

If the winner does not view the key for 7 days and ignores your attempts to contact them, just re-roll the giveaway and get a new winner.

Oh had this situation before, around a month like you also in fact, just show that you did attempt to contact and request a new winner. Never asked for a deletion that way so idk if its treated the same way or different

I usually write an email to their listed email address if I have trouble reaching them.

I will try to add a request via Steam sometimes, but I don't comment on their profiles anymore, I got a community ban for telling someone "Congrats on winning a gift from me on SG" and they promptly reported me.

I will take a screenshot of the email or the Steam friend request and if it's been more than 7 days, I send a ticket to SG support asking for a reroll with those screenshots as evidence. I usually wait a few days before the email, and if the email has been sent more than 7 days ago, I don't hesitate to ask for a reroll. (Usually takes anywhere from 1-3 days for that to happen.)

As for blacklisting, I decided to just to keep it clean. That's just my own preference, I cleared it for a community event a while back and then kept it that way. I went with the thought that people who may have made a simple mistake deserve another chance.

support button (arrow) at top left > create a new ticket > request new winner

this will re-roll your giveaway and select a new winner. you'll then be able to blacklist the turd without worry. it's not automatic so you might have to give it a few days since a mod has to manually authorize the re-roll.

In future I recommend not doing time-limited giveaways.
It’s be simpler to giveaway keys than to promise a gift, and either find it’s restricted, or not on sale for a long enough time to complete the give.

I write in a old GA of them.
I don't try anymore more contact ways, like email or steam, as i done it in the past, because it solved nothing for me in the past and only made me more work PLUS i don't like to run behind winners and beg that they please please please take their wins -they should be thankful when i give something and not the opposite situation, that i must be thankful if they take it...-.

If that one then don't react after 1-2 days(so 8-9 in the end) i send a reroll request and add the link to my contact try in one of his old GA's + deactivate the key (that he can't see and activate it anymore) .

i dont understand what u saying...

if u blacklist, he cant enter any of your giveaways, also u can reroll

i always blacklist if i see winner is online everyday and he got key waiting, but didnt view/activate.
There was one guy i was trying to contact on steam, adding to friends, commenting profile, writing on giveaway page, commenting to his screenshots, but when he blocked me on steam-i said NEVER EVER.