The winner has redeemed my gift, but not marked it "Received". How do I proceed?
If your gift has been activated or redeemed by the winner, and they have not left feedback after one week, please create a support ticket to request received feedback. A support member will review your ticket, and if the gift is activated on the winner's Steam account, they will update the feedback to "Received".

What happens if I create a giveaway and the winner is unable to activate the gift in their region?
If you setup the giveaway with the appropriate region restrictions, and the winner was outside of those regions due to inaccurate information they provided, then you can request a new winner for the giveaway. If the giveaway did not have the correct region restrictions assigned to it, then one of three options are available.

You can acquire a replacement gift or key for the same game, which the winner is able to activate in their region.
You can accept the giveaway as being "Not Received" by the winner.
You can submit a ticket to have the giveaway deleted. In order for us to delete the giveaway, the winner will need to post a comment on the giveaway saying they agree to have it removed.

okay thx your help