1. There is only one card: it is possible that you mistakenly thought that two cards were opened before, but actually only one card was opened.
2. Posting delay of the card: It is possible that your second card did not arrive in time. You can contact the customer service of Shanghai Pudong Development Bank for advice on sending cards.
3. Lost card: It is possible that your second card was lost in the mail. You can contact the customer service of Shanghai Pudong Development Bank to apply for a new card.