wordpress - WP-PageNavi Issues, Url changes but the posts remain the same? -

the issue having have created new blog page on own page template page being called blog.php, have pulled 5 posts each page , first page work great , link single posts attached too.

when try add wp-pagenavi nav-below run issue. happens click go next page , changes url, posts remain same before, when should switching them next set.

i don't know if can use wp-pagenavi outside of index.php, if can let me know doing wrong here , why continue same posts awesome , appreciated. have 1 of blogs on blog.php , file trying work. have posted code below.

<?php /**  * template name: blog page  <?php query_posts("posts_per_page=8"); ?>  */  get_header(); ?>      <div id="content">     <?php query_posts( array( 'post_type' => 'post', 'posts_per_page=5' ) ); ?>     <?php      //the loop.     if( have_posts() ):          while( have_posts() ):         the_post(); ?>          <article id="post-1" <?php post_class( 'clearfix' ); ?>>             <h2 class="entry-title"> <a href="<?php the_permalink(); ?>">                  <?php the_title(); ?>              </a></h2>             <div class="postmeta">                  <span class="author"> posted by: <?php the_author(); ?> </span>                  <span class="date"> <?php the_date(); ?> </span>                  <span class="num-comments">              <?php comments_number('no comments yet', 'one comment', '% comments'); ?></span>                  <span class="categories">                      <?php the_category(); ?>                                 </span>                  <span class="tags">                     <?php the_tags(); ?>                 </span>              </div><!-- end postmeta -->               <?php if( has_post_thumbnail() ): ?>             <div class="thumb">                 <?php the_post_thumbnail( 'thumbnail' ); ?>             </div>             <?php endif; ?>                         <div class="entry-content">                 <?php              if( is_single()  or is_page() ):                      the_content();                  else:                      the_excerpt();                  endif;                  ?>             </div>           <?php comments_template(); ?>          </article><!-- end post -->       <?php        endwhile;       else: ?>       <h2>sorry, no posts found</h2>       <?php endif; //end of loop. ?>           <div id="nav-below" class="pagination">           <?php if( function_exists('wp_pagenavi') ):                   wp_pagenavi();              else:            ?>              <?php next_posts_link( '&larr; older posts' ); ?>             <?php previous_posts_link( 'newer posts &rarr;' ); ?>              <?php endif; ?>         </div><!-- end #nav-below -->      </div><!-- end content -->  <?php get_footer(); ?>   

after <div id="content"> have code:

<?php $paged = (get_query_var('paged')) ? get_query_var('paged') : 1; ?> <?php query_posts( array( 'post_type' => 'post', 'posts_per_page=5', 'paged' => $paged ) ); ?>