I got an e-mail from technical support/customer service, as I also had the same problems with entering the numbers. They sent an e-mail back saying they are experiencing intermittent problems with the website. However, if you wait at least a few hours after you've activated your phone before you jump onto the site and download your coupon, then you should have better luck apparently. It appears that the databases are not syncing in real-time, so it's taking some time to update the list of activated phones. Your phone has to be activated before it'll process the gift card from what I understand.