BeBuzz registration key

I bought BeBuzz about 2 weeks ago, I love it. I decided to download the leaked OS 5.0 a few days ago, also love it. What I don't love is that when I "backed up" my files before installing OS 5.0 apparently it didn't back up BeBuzz. It's still on my phone but it's asking for the registration key, which I already put in the day I bought it. I did not write the key down (yes I know I should have), it was so easy when I bought it, it allowed me to copy/paste the key where I needed it.

Is there a way to find my key or request another one? I'd really hate to have to buy BeBuzz again.