How to retrieve the options from this options page?

Your options are saved under a single key my_option_name, so you would access the individual options like:

$my_options = get_option( 'my_option_name' );
echo $my_options['title'];
echo $my_options['id_number'];

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