What are the Payment Methods:
Always add more than one payment option. Various payment methods are offering you relaxation about your payments. Facebook recognizes Paypal and credit card payments. By the time, as you grow with your advertisement, start adding other payment options too. It will avoid any obstruction in your payments, whatever may be the cause. Because, if your billing stops working, your campaigns would be blocked right away till you clear the payments. It can impact your campaigns negatively. At that time, the secondary payment option, if added, will function and keeps everything running. If at a certain point, you need to remove your primary payment method, you have to enter or choose another source as primary. You cannot completely remove the only payment method.