Please note, if you're using monthly subscription, formally you're renewed automatically every month. However, you can still renew your current plan manually in order to change your billing address or credit card. In this case you'll simply pay for the next month in advance.
Sometimes the payment cannot go through automatically and you get a failed payment notification. Often it happens when the credit card has expired, or there is not enough money, or the card is blocked. Renew your plan manually and enter a new credit card details on the Order Checkout page in this case.
Please contact us at email@example.com if you don't plan to renew or upgrade.
If you would like to change the email address that is used for sending reminders, invoices, subscription details etc, please contact firstname.lastname@example.org.