To change or update the credit card that you have on file, simply log in to your ZonBase account. 


At the upper right part of the page, you can see your username. Click on My Profile and head over to the Billing Tab. 


On this page, you will have the option to change and update your billing information. Your billing history and other billing information can also be accessed in this tab. You can change your credit card info on this page by changing your Payment Method and updating your information.