Hi,

By default, WordPress will be added rel="no-follow ugc" to the comment text link. If you want to remove this, please install Code Snippet Plugin, then create a new snippet with the following content:

function tuyenpc_remove_nofollow($text) {
   $text = preg_replace("/(<a[^>]*[^\\s])(\\s*nofollow ugc\\s*)/i", "$1", $text);
   $text = preg_replace("/(<a[^>]*[^\\s])(\\s*rel=[\\"\\']\\s*[\\"\\'])/i", "$1", $text);
   return $text;
}
add_filter('comment_text', 'tuyenpc_remove_nofollow');