Activate Account - Status Not Change

Hai, 

i'm try to create login and register user activate their account via email.
Link is sended to user email, and confirm is successfull, but the 'status' on database is not change. Can someone help me to check my code, maybe something error in there.

Code:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Voter_model extends CI_Model
{
    
        
    function __construct()
    {
         // Call the Model constructor
         parent::__construct();
    }

    //get the username & password from tbl_usrs
    function get_user($username, $password)
    {
         $sql = "select * from user where username = '" . $username . "' and password = '" . $password . "' and status = '1'";
         $query = $this->db->query($sql);
         return $query->num_rows();
    }
    
    
     //insert into user table
   function insertUser($data)
   {
       return $this->db->insert('user', $data);
   }
   
   //send verification email to user's email id
   function sendEmail($to_email)
   {
       $from_email = '[email protected]'; //change this to yours
       $subject = 'Aktivasi Akun';
       $message = 'Hallo'. $username .'<br /><br />Silakan klik link dibawah ini untuk mengkonfirmasi akun Anda pada Sistem E-voting Desa Pakraman Cucukan.<br /><br />
 '. site_url('voter/voter_register/verify/'.md5($to_email)) . '<br /><br /><br />Terima Kasih<br />Admin Evoting';
       
       //configure email settings
       $config['protocol'] = 'smtp';
       $config['smtp_host'] = 'ssl://smtp.googlemail.com'; //smtp host name
       $config['smtp_port'] = '465'; //smtp port number
       $config['smtp_user'] = $from_email;
       $config['smtp_pass'] = 'evoting2016'; //$from_email password
       $config['mailtype'] = 'html';
       $config['charset'] = 'iso-8859-1';
       $config['wordwrap'] = TRUE;
       $config['newline'] = "\r\n"; //use double quotes
       $this->email->initialize($config);
       
       //send mail
       $this->email->from($from_email, 'Admin Evoting');
       $this->email->to($to_email);
       $this->email->subject($subject);
       $this->email->message($message);
       return $this->email->send();
   }
   
   //activate user account
   function verifyEmailID($key)
    {
   $data = array('status' => 1);
   $this->db->where('email', $key);
   $verify=$this->db->update('user', $data);
    if($verify==true)
         {
          return true;
        }
          return false;
    }

    
    
}?>

and my controller, is

Code:

<?php
class Voter_register extends CI_Controller
{
   public function __construct()
   {
       parent::__construct();
       $this->load->helper(array('form','url'));
       $this->load->library(array('session', 'form_validation', 'email'));
       $this->load->database();
       $this->load->model('Voter_model');
   }
   
   function index()
   {
       $this->register();
   }
    
    
    
   function register()
   {
       //set validation rules
       
       $this->form_validation->set_rules('email', 'Email ID', 'trim|required|valid_email|is_unique[user.email]');
       $this->form_validation->set_rules('password', 'Password', 'trim|required|matches[cpassword]');
       $this->form_validation->set_rules('cpassword', 'Confirm Password', 'trim|required');
       
       //validate form input
       if ($this->form_validation->run() == FALSE)
       {
           // fails
           $this->load->view('voter/voter_register');
       }
       else
       {
           //insert the user registration details into database
           $data = array(
               'fname' => $this->input->post('fname'),
               'lname' => $this->input->post('lname'),
               'email' => $this->input->post('email'),
               'password' => $this->input->post('password'),
                 'username' => $this->input->post('username'),
                 'voting'=> 1
                
                
           );
           
           // insert form data into database
           if ($this->Voter_model->insertUser($data))
           {
               // send email
               if ($this->Voter_model->sendEmail($this->input->post('email')))
               {
                   // successfully sent mail
                   $this->session->set_flashdata('msg','<div class="alert alert-success text-center">Registrasi Sukses, silakan cek e-mail Anda untuk melakukan konfirmasi dan aktivasi akun.</div>');
                   redirect('admin_voter');
               }
               else
               {
                   // error
                   $this->session->set_flashdata('msg','<div class="alert alert-info text-center">Registrasi Sukses, gagal mengirim e-mail verifikasi.</div>');
                   redirect('admin_voter');
               }
           }
           else
           {
               // error
               $this->session->set_flashdata('msg','<div class="alert alert-danger text-center">Oops! Error.  Please try again later!!!</div>');
               redirect('admin_voter');
           }
       }
   }
   
   function verify($hash)
   {
        $this->load->helper('url');
        $this->load->model('voter_model');

       if ($this->voter_model->verifyEmailID($hash))
       {
           
          redirect('voter/voter_aktivasiok');
       }
       else
       {
         
           redirect('voter/voter_aktivasifail');
       }
   }
}
?>

Thanks