When using a card associated with Google Pay or Apple Pay, the card number and the expiry date on our platform can differ from the actual card number and the actual expiry date. This is due to the extra security layer applied by Google Pay and Apple Pay, which generate a tokenized (random) number and expiry date.
GooglePay doesn’t offer you to check the real number on their application.
On iOS, you can check the actual number in your Apple Pay wallet:
If a card you’re using with Google Pay or Apple Pay is no longer active, please check this article.