Let user edit his own comment

You can add the following code in function.php

$subscriber= get_role('subscriber');
$subscriber->add_cap('edit_comment');

Meanwhile edit_comment is only supported in version 3.1 or newer

Or you can use this plugin link

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)