.

Both don't have the game in their library though. So maybe the key has expired? Tak to them!

I've tried to contact them as well as have open support tickets so IDK what else to do

I don't believe either of them claimed the game, at least not on the steam profile they have linked to their profile here.

According to https://www.sgtools.info/activation one of your winners in question has two not activated wins. You should always check your winners before handing over their game and ask for a re-roll if they come up red in the check.
If you're thinking you'll have less trouble with your region restricted giveaways you're wrong. Better to implement a level restriction of 2+ or 3+ minimum.

Peteozzy even added possible reasons at If found:
"Keys for this game have a high number of region locks, it's likely that the winner hasn't been able to activate the game because of that. It's a shame that they haven't contacted you to tell you themselves, but we have seen issues with most giveaways for If Found so I would assume that is what has happened here. It might be worth contacting the winner and seeing if they would agree to deleting the giveaway so that you can recreate the giveaway with it region locked to your area."
I think your key still works, but since the giveaway is not set to regional even a reroll wouldn't help.
The best would be to delete and recreate with proper regional settings.

I have started to put a level req on all my GA's as well as make them region restricted to US/Canada for safe measure, to help prevent this. Is there another way to contact support other than filling out a ticket? I have 2 tickets that have not been replied to, been months and no reply.