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In the most current AppWorld versions, "gifting" was indeed removed. The only way you could do this would be, I suppose, to change the payment details on your friends BB ID to your credit card, conduct the purchase, and then change their payment details back to whatever they had before.
A painful way to accomplish it, yes...but it is what it is.
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.