Issue with cookies and mysql.

<?php
$section = "reseller";
include('inc/header.php'); 
$login = "";
$logged = "0";
$warning = "";

if ($_SERVER["REQUEST_METHOD"] == "POST") {

    require("include/config.php");
    $userpw = mysql_real_escape_string(md5($_POST['pw']));
    $userid = mysql_real_escape_string($_POST['email']);

    $query = "SELECT * FROM `reseller` WHERE `email`='$userid' AND `pass`='$userpw'";
    $result = mysql_query($query);
    $resultcount = mysql_num_rows($result);
    if ($resultcount == 0) {
        $warning = "Wrong username or password";
    } else {
        setcookie("user", $userid, time()+3600);
        setcookie("pass", $userpw, time()+3600);
        $logged = "1";

        }
    }

?>


    <div id="wrapper">
      <section id="primary">
        <h3>Reseller section</h3>     
          <fieldset>

              <?php 

                if (isset($_COOKIE["user"])) {

                    $userpw = mysql_real_escape_string($_COOKIE["pass"]);
                    $userid = mysql_real_escape_string($_COOKIE["user"]);  

                    $query = "SELECT * FROM `reseller` WHERE `email`='$userid' AND `pass`='$userpw'";
                    $result = mysql_query($query);
                    $resultcount = mysql_num_rows($result);
                    if ($resultcount == 0) {
                        $warning = "Wrong username or password!";
                    } else {
                        while($row = mysql_fetch_object($result)){
                            $valid = $row->valid;
                            $age = $row->birthday;
                            $price = $row->price;
                            $email = $row->email;
                            $name = $row->name;
                            $id = $row->id;

                            If ($valid == "true") {
                                $valida = "Yes"; 
                            } elseif ( $valid == "pending") {             
                                $valida = "Is being reviewed";
                            } else {
                                $valida = "No"; 
                            }
                        }
                    }                    
              ?>

              <p><?php echo $warning ?></p>
                <ul>
                    <li>
                        <a href="login.php">Profile Picture</a>
                    </li>
                    <li>
                        <a href="login.php">Set name</a>
                    </li>
                    <li>
                        <a href="login.php">Set age</a>
                    </li>
                    <li>
                        <a href="login.php">Set price</a>
                    </li>
                    <li>
                        <a href="login.php">Set email</a>
                    </li>
                    <li>
                        <a href="login.php">Delete Account</a>
                    </li>


                </ul>
                <?php 

              } else {

                ?>
                    <legend>Login</legend>
                        <form method="POST" action="#">
                        <p><?php echo $warning ?></p>
                        <label for="email">Email:<br></label>
                        <input type="text" name="email" id="email"><br>
                        <label for="password">Passwort:<br></label>
                        <input type="password" name="pw" id="pw"><br><br>
                        <input type="submit" value="Login"> or sign up <a href="register.php">here</a>.
                    </form>
                <?php
              }

                  ?>

          </fieldset>

    </section>
</div>

<?php include('inc/footer.php'); ?>