It is important that the credit card attached to your Primate Subscription stays updated and valid to avoid delays with your next renewal!
You can update your credit card details for your Primate Subscription under your Primate Membership page on your Account.
From there select "Change Payment Method" in the blue box to update your payment details before your next renewal.
You will then be prompted to update your credit or debit card details. Your new card will only be charged once your Primate Membership is ready to renew upon expiry.