Don't forget to update your payment information anytime you get a new credit card or want to change which card is billed.
Log into your online studio at celtx.com and select Studio Management from the left hand side of your screen. In the Plan section scroll down to your "Review your Billing" section.
Here you can view/update your Payment Information:
Once updated, all future payments will be charged to your updated card.
If you have one of our legacy plans you will find the option to update your payment information in your online studio under Management > Settings.