To change the credit card used for your donations on Public Good, just login to your Public Good account, then click on "Account" in the top right of the Public Good home page. From your account page, click on your name in the top right corner to get the drop down menu. Choose “My Profile.”
On your profile page, choose “Profile”
Click “Payment Info” on the left, and the last 4 digits and expiration date of your current credit card will be displayed. Simply click “Replace credit card” and enter the new card information.
Click “Save Credit Card” and voila! your payment information has been securely updated.