Hey Onur,

You need to add the following code to functions.php file in order to clean up nofollow tag from your post content and comment text:

function remove_nofollow($string) {
	$string = str_ireplace(' rel="nofollow"', '', $string);
	return $string;
}
add_filter('the_content', 'remove_nofollow');
add_filter('comment_text', 'remove_nofollow');

Best regards,

Hey Onur,

Looks that you have added the code after the closing ?> PHP tag. Please make sure to add the code before main <?php tag is closed.

Best,