Hi, Belle, welcome to the forums!
I'm afraid I can't help you, only with the advice to write to the developer. Sometimes they have a heart and give away a reg.-key when you write a short review.
I haven't installed that programme, so I can't check if it is still running, maybe other users will answer this question. Normally our Giveaways shouldn't expire. But there is always the danger that a registration gets "killed", till example when a cleaner is too eagerly, or perhaps you tried to update the programme.
When you have read the rules for GOTD you know, that we can not give away any registration keys. Sorry.
So again my advice: write to the developer.
Good luck and join the forums!
graylox