The only way to update your credit card information (or enable automatic monthly payments) is to complete an invoice payment, and ensure the "Enable automatic monthly payments using my credit card" option is selected.
When a monthly invoice is paid, you will receive a license key with a pre-determined expiry date—the expiry date is automatically calculated from your very first monthly payment. The license key is valid only until the expiry date written on the most recently paid monthly invoice.
Example: By completing payment for invoice #3, you will receive a license key that is valid only until the end of the third month—No matter when it was paid for.
Your twelfth and final license key does not expire; at this point the software is yours to keep. (Note: You will still need to purchase Software Maintenance separately to receive future updates, see the next question: How do software updates work?).
Software purchased with the monthly payment plan includes 12 months of product updates and support. After the 12 months have expired you may purchase Software Maintenance to maintain access to product upgrades and support.
You can disable automatic monthly payments from your credit card at any time (go to Edit Profile when logged in to Ytria.com). If you disable automatic monthly payments, you must make payments manually.