Created a GA, turns out the key is duplicate. What to do?

Get wroking key and give it to winner ? Or wait 7 days and recive one "Not recived' point.

Getting a replacement key from Indie Royale is going to be hard, as the company that owns it & Desura is bankrupt. You might have to find a key somewhere else.

I've had issues with IR keys as well.

This bundle was available since October 1, 2014, so the key can be duplicate now. I'm afraid you'll have to buy the gift for the winner. Thankfully, the game is quite cheap on Steam atm.

damn, didn't know that. Well, I was looking for a spare key anyway. No gonna buy from those bundles again.

those bundles are a bit tricky some times
the best thing is to buy the game as cheap and give it to the winner

I'd wait on the support ticket probably... Usually they resolve these things in a few days. This has happened to me before too, in bundlestars & indiegala, and in both cases they gave me a new key. Otherwise just buy the game.