@Shandilya : where did you get the paid version???
SOLVED, doing some experiment with wp_list_categories and get_term_by. I’ve added this code to my taxonomy.php
<?php
//first get the current term
$current_term = get_term_by( 'slug', get_query_var( 'term' ), get_query_var( 'taxonomy' ) );
//then set the args for wp_list_categories
$args = array(
'child_of' => $current_term->term_id,
'taxonomy' => $current_term->taxonomy,
'hide_empty' => 0,
'hierarchical' => true,
'depth' => 1,
'title_li' => ''
);
wp_list_categories( $args );
?>
