Redemption problems?  Try the QR code.
I got one of these as a birthday gift (thanks mom!) When I was ready to redeem it I tried multiple times to enter the claim code with no success.  I noticed that there was a QR code on the back so I gave it a try.  It took me to an Amazon page that had the claim code pre-filled.  Much to my surprise the pre-filled claim code was different than what was printed on the back of the card.  Not much different, but different nonetheless.  I signed in to my Amazon account and I was able to redeem the gift card without any further difficulty.  So if you're having trouble redeeming a card try the QR code, and see if that helps.  Of course, it shouldn't come to this which is why I'm only giving it 3 stars.
Rating: 3 stars