To change your payment details:

• Log in to your artist account and go to “My Releases”
• Select the release/s you would like to change the payment information for
• Click 'Cancel Subscription' (don't worry, this won't take your music down from stores!)

After that, click 'renew subscription' and enter your updated payment details.

Keep in mind that when you update the payment method you will start a new subscription year. So please consider updating the payment method once your release is up for renewal in order to make the most out of the existing subscription.  

Please DO NOT click 'issue takedown' unless you would like that release removed from stores.