Credit cards can be activated within the validity period. The validity period of a credit card is on the front of your credit card, especially on the lower left of the credit card number.

For example, if the validity period of your card is displayed as 09/20, it means that the validity period will expire in September 2020, which means that by September 2020, your credit card will not be used and will not be activated. You need to wait for the bank to issue you a new card or take the initiative to apply for a new card from the bank.

Most of them can be activated before this. I don't know if I understand what I said. I hope my answer can help the landlord!