Hey adding you on steam if you have some time and want to talk about it.

I found two multi accounts and a strong related main account.
While searching I found two others, with suspicious&parallel activity(like same entry, online times and two registered on the same day) one of them is banned by sgtools.

So I probably found the account that shared the link.
Wouldn't surprise if at least one other account also has infractions and maybe you could verify if that specific main account had access to these giveaways.

Thank you and even more for creating and managing SGtools (●'◡'●)