I recently purchased BT Fibre 2 broadband package (through the BT Website), and have not had anything back yet about the reward card. I have gone to claim it and it's showing as no available rewards.
Welcome to the BT Community and thanks for your post!
I am sorry for the problems claiming for your reward card. I have sent you a private message with instructions on how you can send us over your details and we'll look into this for you. See: Private messages
Cheers,
Robbie