ok the suport tell me how to change the key, pls try again in the Ga you win :-)
i hope this key is working :-)
if it works you can klick Received :-)

"Hello nurse2buerst.

It is possible to change key that was assigned to the giveaway after it ended.

You should choose Winners tab on the left of the giveaway, then click Modify to change giveaway key. Next notify winner key was exchanged, and that they should check their wins page again to activate exchanged key or giftlink.

If you wanted to delete giveaway, as you thought it's not possible to change key that was given to the winner, and my instruction solve this problem you can close this ticket ;) "