If you already have a BlackBoxStocks account, please email support@blackboxstocks.com notifying our team that you would like to redeem your gift card.
If you do not have a BlackBoxStocks account, create one here, but do not proceed through the payment portion:
https://members.blackboxstocks.com/account/register#Registration
Then email support@blackboxstocks.com and we can redeem your card for you.