Why Do Payments Fail on Crypto Exchanges or Subscriptions?
Crypto exchanges: Some exchanges and digital asset related merchants restrict virtual or prepaid cards under their own rules. You may need to use a different payment method or merchant.
Subscriptions: Renewals are charged on the renewal date. If your balance is too low that day, your card is frozen, or the merchant restricts the card, the renewal will fail. Keep enough balance on your card before the renewal date.