UM + Stripe Docs

Change Date Format in Checkout Details page.

See: Supported Date Formatopen in new window

add_filter( 'umm_stripe_checkout_details_date_format', 'um_1172023_stripe_checkout_details_date_format', 10, 1 );
function um_1172023_stripe_checkout_details_date_format( $date_format ){

   $date_format = 'Y/m/d';

  return $date_format;
}