I need to figure out how to add a product fee that's based on the credit card the customer uses.
For example, if they pay VISA or MasterCard, I must charge an extra 3%. If they pay American Express, I have to add 5%.
Is this possible, and if so, how do I do it? I am unable to use the WooCommerce Extra Charge for Payment Gateway (Standard) plugin as there are no options in the backend.