Code-Snippets-Functions/Execute a function on a child site/WooCommerce/hide-specific-payment-method-for-new-customers.txt

add_filter('woocommerce_available_payment_gateways', 'cheque_payment_gateway_only_for_paying_customers');
function cheque_payment_gateway_only_for_paying_customers($gateways) {
    if ( ! WC()->customer->get_is_paying_customer() && isset($gateways['cheque']) ) {
        unset($gateways['cheque']); // Unset 'cheque' payment option
    }
    return $gateways;
}