Hello I seem to be having a very frustrating problem with my login which i cannot seem to fix as there is no error output.I seem to have fixed this problem on my mac but i transfered the exact files over to my windows pc and its stopped working again. whenever I try and login with the example a@a.com and password a is seems to just refresh the page over and over no matter how many times I have tried.I was wondering if anyone could help with this error? I have tried adding the action to login.php it seems to make no difference.
picture of table im taking data from: 
session.php:
<?php
include('config.php');
session_start();
$user_check = $_SESSION['login_user'];
$ses_sql = mysqli_query($conn,"select email_adress from customer where email_adress = '$user_check' ");
$row = mysqli_fetch_array($ses_sql,MYSQLI_ASSOC);
$login_session = $row['email_adress'];
if(!isset($_SESSION['login_user'])){
header("location:login.php");
}
?>
login.php
<?php
include("config.php");
session_start();
if($_SERVER["REQUEST_METHOD"] == "POST") {
// username and password sent from form
$myusername = mysqli_real_escape_string($conn,$_POST['username']);
$mypassword = mysqli_real_escape_string($conn,$_POST['password']);
$sql = "SELECT customer_id FROM customer WHERE email_adress = '$myusername' and password = '$mypassword'";
$result = mysqli_query($conn,$sql);
$row = mysqli_fetch_array($result,MYSQLI_ASSOC);
$active = $row['customer_id'];
$count = mysqli_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row
if($count == 1) {
$_SESSION['login_user'] = $myusername;
header("location: index2.php");
}else {
$error = "Your Login Name or Password is invalid";
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<title>Login | Bid4MyJob</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<input type="text" class="form-control" placeholder="search ...">
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</span>
</div>
</form>
</div>
</div>
<!-- END TOPBAR -->
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<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#main-nav">
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</button>
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</a>
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<ul class="nav navbar-nav navbar-right">
<li>
<a href="index.php">HOME</a>
</li>
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</li>
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</li>
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</li>
<li>
<a href="signup.php">SIGN UP</a>
</li>
<li>
<a href="login.php">LOGIN</a>
</li>
</ul>
</div>
<!-- END MAIN NAVIGATION -->
</div>
</nav>
<!-- END NAVBAR -->
<!-- BREADCRUMBS -->
<div class="page-header">
<div class="container">
<h1 class="page-title pull-left">Login</h1>
<ol class="breadcrumb">
<li><a href="#">Home</a></li>
<li class="active">Login</li>
</ol>
</div>
</div>
<!-- END BREADCRUMBS -->
<!-- PAGE CONTENT -->
<div class="page-content">
<div class="col-md-6">
<!-- LOGIN FORM -->
<h2 class="section-heading">Login Form</h2>
<form class="form-horizontal" role="form" action = "login.php" method = "post">
<div class="form-group">
<label for="username" class="control-label sr-only">Email</label>
<div class="col-sm-12">
<div class="input-group">
<input type="email" class="form-control" id="username" name = "username" placeholder="Email">
<span class="input-group-addon"><i class="fa fa-envelope"></i></span>
</div>
</div>
</div>
<div class="form-group">
<label for="password" class="control-label sr-only">Password</label>
<div class="col-sm-12">
<div class="input-group">
<input type="password" class="form-control" id="password" name="password" placeholder="Password">
<span class="input-group-addon"><i class="fa fa-lock"></i></span>
</div>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<label class="fancy-checkbox">
<input type="checkbox">
<span>Remember me</span>
</label>
</div>
</div>
<div class="form-group">
<div class="col-sm-12">
<button type="submit" class="btn btn-primary"><i class="fa fa-sign-in"></i> Sign in</button>
</div>
</div>
</form>
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<p><em>Don't have an account yet?</em> <a href="#"><strong>Sign Up</strong></a>
<br>
<em>Forgot your password?</em> <a href="#">Recover Password</a></p>
<!-- END LOGIN FORM -->
</div>
</div>
<br>
<br>
<div class="row">
<div class="col-md-6">
<!-- LOGIN FORM WITH LABEL -->
<!-- END LOGIN FORM WITH LABEL -->
</div>
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<!-- SIMPLE FORM -->
<!-- END SIMPLE FORM -->
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<h3 class="sr-only">ABOUT US</h3>
<img src="assets/img/logo/repute-logo-light.png" class="logo" alt="Repute">
<p>Proactively aggregate B2B initiatives before extensive channels. Monotonectally extend interactive methods of empowerment through excellent applications. Rapidiously synergize visionary products with sticky technology.</p>
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<ul class="list-unstyled">
<li>Unit 5, Block B Nesfield Road
<br/> Colchester, Essex CO4 3ZL 222222</li>
<li>Phone: 01206 588 000</li>
<li>Email: sales@universalwebdesign.co.uk</li>
</ul>
</address>
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