I want it to open in the same window

Hi @cihan,

You can use the following JS code:

jQuery(document).ready(function(){
     jQuery("#wpdcom .wpd-avatar a").attr('target', '_self');
});

Here is a helpful article: https://www.collectiveray.com/add-javascript-to-wordpress

thank you very much  Asti 🙂

I solved my problem like this : 

theme editor --- functions.php    and  add this code

add_filter('wpdiscuz_avatar_link_attributes', function ($attr) {
if (isset($attr['target'])) {
$attr['target'] = '';
}
return $attr;
});

I have one more problem:), please help me

How to make wpdiscuz full width? 

like this;

https://gvectors.com/forum/how-to-and-troubleshooting/how-to-make-wpdiscuz-full-width/#post-13670

div#comments {
   width: auto !important;
   max-width: 100% !important;
}

this code not working 🙁

thank you very much