Use this hook to add extra fields to the billing page or execute custom code immediately before the Submit button.
pmpro_include_cardtype_field
pmpro_longform_address
Filters whether or not to use the international address form. By default, this is set to true to allow any form of address. When set to false, this will display the shortened “US” version.
pmpro_stripe_lite
Controls whether to enable Stripe Lite, which only shows minimal Billing Fields (no address fields, no card type). Overrides “Show Billing Address Fields” in Memberships > Payment Settings.
pmpro_show_cvv
Controls whether to show the CVV field on the billing and checkout pages.