Pay. reminder: enable the checkout link for several statuses

/* Code to paste into your functions.php theme file */

add_filter('woocommerce_valid_order_statuses_for_payment', 'my_valid_order_statuses_for_payment', 10, 2);
function my_valid_order_statuses_for_payment($statuses, $order)
{
    //change here the status list
    return array( 'pending', 'failed', 'on-hold' );
}