If you have already bought and paid for the 30th dlc then it's just a bug and power cycle your platform. If you preordered the witch queen + 30th bundle they've now charged your card/payment method. And it's failed which means you probably haven't got enough funds to pay for it and they've cancelled your preorder as a result. Check the bank and retry. The store has now swapped preorder with the buy option so you'll be charged instantly instead of waiting. On that note the reason why you're being charged now is that the witch queen release date got priority over the 30th pack so you didn't get charged when the 30th dropped but now that witch queen is here you now have to pay for your order.