solved---- uncheck Force Rewrite Title
replace
<title><?php wp_title('|',true,'right'); ?><?php bloginfo('name'); ?></title>
with
<title><?php wp_title(''); ?></title> in your header.php
solved---- uncheck Force Rewrite Title
replace
<title><?php wp_title('|',true,'right'); ?><?php bloginfo('name'); ?></title>
with
<title><?php wp_title(''); ?></title> in your header.php