The phrase "billing address" refers to the location where you receive your bills or invoices. It is the address connected to your financial accounts, such as a credit card, which is used for communication and payment purposes. Full definition
If you do not enter the correct billing address for your credit card, your transaction may be declined. (secure.nipnlg.org)
If you are unable to edit, email Customer Service (include the email address used when signing up, full name, and credit card billing address). (datingbits.com)
We do know that they usually reject payments for some of the following reasons: Billing address does not match registered card address. (wolfsgamingblog.com)