@unbandanny I get you, this could happen to anyone so don't worry. In this case you will have to make another giveaway as you stated above.
Make the giveaway, mention staff to select the new winners (marketplace staff or GMs) and then come back here with the results and unban (leave a reply): https://www.mpgh.net/forum/756-giveaways/ . You will need the winner confirmations as well
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@unbandanny , if there are old winners in your incompleted giveaway please mention them here and give them the skins so you can skip to do another giveaway