Your billing information is located  in the Client Area, and this article will teach  you how  can one update all  of the necessary billing details. This article is  going to expect that you are currently logged into the Client Area. Should  you be having difficulties doing that, or don't  know how, make  sure you view the article named "How to Login to the Client Area". 
In the client area menu bar, click on the My Details link. In the My Details screen, you can see your details, including name, address and phone number. So that payments to be properly processed, this information has to be correct. Kindly confirm all the details.
The following thing is to click on the Change Credit Card Details link in the menu bar. You can update your card information, like the expiration date. You can also add a new card. Soon after doing any needed changes, click on the Save Changes button.
Then click the Client Area link. This is actually the end of this article. You now figure out how to update your billing information in the Client Area of WHMCS.
        In the client area menu bar, click on the My Details link. In the My Details screen, you can see your details, including name, address and phone number. So that payments to be properly processed, this information has to be correct. Kindly confirm all the details.
The following thing is to click on the Change Credit Card Details link in the menu bar. You can update your card information, like the expiration date. You can also add a new card. Soon after doing any needed changes, click on the Save Changes button.
Then click the Client Area link. This is actually the end of this article. You now figure out how to update your billing information in the Client Area of WHMCS.