That information is all retrieved from paypal on lines 32-58. I'd have to debug with you to see if paypal simply doesn't pass the billing address or if it is referenced improperly in the code. The code looks correct to me, so I'd need to debug further with you. If you post a US phone number or Skype contact information, then I can call you and set up a screen sharing session to look over this with you and debug what is going on.