If you wish to update your Billing, account or payment related information through the Chargebee web interface, 
  1. Log-in to your Chargebee Live Site
  2. Click on your account name in the top right corner of the web interface
  3. In the drop-down list, click on Manage under Your Chargebee Subscription. 

 4. You will be taken to your account details page. Click on Manage Account under Subscription Details.

 5. Now you can update your billing/account/payment information. Screenshot below for your reference.