If a Moralis subscription payment was declined, first check the payment method in Dashboard Settings → Plan and Billing. Confirm that the card is current and that your bank permits the transaction. Your bank can tell you whether a limit, online-payment restriction, or security check caused the decline.
If the card details and bank approval look correct, contact Moralis support from your account email. Include the approximate time, plan or invoice, and the error shown in the Dashboard. Do not send your full card number, security code, or banking credentials.