Don't worry!! If you got it from crackberry you just resend the link to your phone from your account and your good go to the app store icon and go to the sub heading "login with your account" login. And go to your paid apps and resend it to your phone
Posted from my CrackBerry at wapforums.crackberry.com
Ive never purchased any apps from app world, only freebies but do you get an email confirming payment or anything? I'd contact the company with your transaction # and see what they say.