To update your credit card information, please follow these steps.
1) First goto the client billing portal at this url: http://www.webecs.com/client/
2) Click on the 'Client Area' icon
3) Next, enter your client billing portal email address and password
4) Once logged into the portal, click on 'My Details'
5) Next, select the 'Change Credit Card Details'
6) Lastly, enter your new credit card information, and click 'Save Changes'