With a balance still showing, makes me wonder if they are just blank denying all digital gift cards for now... (or cards without a pin, from a certain source, etc)
Maybe they're trying to narrow down the cards that were generated to wipe them? Also, if you check a card balance online it will no longer show previous transactions if it's been used or the original creation date if it hasn't been used. On their recent app update the only change mentioned is ordering online with a gift card is not available and they have a huge notice when you open the app. I'll try to get something Saturday.