I cannot add my card whose payment method is troy. it says your card number is wrong. but I write it correcty.
OpenAI also may have reduced the card types from that full list of cards supported by their payment processor.
so, you mean, the payment methods for chatGPT plus is a subset of those listed in the page you shared?
Yes, the fact that the error is “your card number is wrong” means the card type is not one that validates against the number formula of those that are common (like VISA or Mastercard that start with 4 or 5 respectively).
Were you able to proceed further, there are also sub-classes of cards within those that would be rejected, such as prepaid gift cards.