[Plugin: WP-PageNavi] Not working

WP-PageNavi is not working.
please check my code

$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;

$loop_query = new WP_Query(
                      array(
                        'posts_per_page' => $args['posts_per_page'],
                        'post_type'      => $args['post_type'][0],
                        'cat'            => $args['cat'],
                        'orderby'        => $args['orderby'],
                        'order'          => ($args['order'] == '') ? 'DESC' : $args['order'],
                        'paged'          => $paged
                        )
                    );

my loop

if(function_exists('wp_pagenavi') && $enable_pagination == 'yes'):
          wp_pagenavi( array( 'query' => $loop_query ) );
      endif;
      wp_reset_postdata();

the pagination is showing at my page.. but when i click next or 2 or any of the number the url change somehow but i got the same page with the same posts.
i tried unsing wp_reset_query but still not working.

any ideas?

Thanks
Sheldz