How can my buyer change the payment source when checking out with PayPal?
When the buyer is going through checkout and selects PayPal as their payment option, they will be automatically redirected to PayPal. If the buyer wishes to change the source of their payment once at PayPal (i.e. bank draft to credit card), then they should click the “More Funding Options” at the bottom of the PayPal page. Here they can select to use their available PayPal balance, an eCheck, etc.