PHP contact form seems to work, not receiving email - php

Question

Not a PHP expert. With that said, I've used this system before and it seemed to stop working one day. I can't seem to get emails sent anymore even if I'm not getting any error messages. I don't know what's wrong.
Form page:
<form method="POST" name="contactform" action="contact-form-handler.php">
<label for='name'>Your Name:</label> <br>
<input type="text" name="name">
<label for='email'>Email Address:</label> <br>
<input type="text" name="email"> <br>
What does this concern?<br>
<select name="options">
<option value="null">--</option>
<option value="IEP">IEP</option>
<option value="Section 504">Section 504</option>
<option value="Other">Other</option>
</select>
<p style="width: 50%">Please include in your message what type of service you are inquiring about. Please be as descriptive as possible so we can help you more efficiently. Thank you.</p>
<label for='message'>Message:</label> <br>
<textarea name="message" cols="45" rows="7"></textarea>
<input type="image" src="img/submit.png" alt="Submit"> <br>
</form>
Handling:
<?php
$errors = '';
$myemail = 'louie540x#gmail.com;';
if(empty($_POST['name']) ||
empty($_POST['email']) ||
empty($_POST['options']) ||
empty($_POST['message']))
{
$errors .= "\n Error: all fields are required";
}
$name = $_POST['name'];
$email_address = $_POST['email'];
$message = $_POST['message'];
$options = $_POST['options'];
if (!preg_match(
"/^[_a-z0-9-]+(\.[_a-z0-9-]+)*#[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/i",
$email_address))
{
$errors .= "\n Error: Invalid email address";
}
if( empty($errors))
{
$to = $myemail;
$email_subject = "Contact form submission: $name";
$email_body = "You have received a new message. ".
" Here are the details:\n Name: $name \n Email: $email_address \n Regarding a(n): $options \n \n Message: \n \n $message";
$headers = "From: $myemail\n";
$headers .= "Reply-To: $email_address";
mail($to,$email_subject,$email_body,$headers);
//redirect to the 'thank you' page
header('Location: contact-form-thank-you.php');
}
?>
<?php include 'template/top.php'; ?>
<!-- This page is displayed only if there is some error -->
<?php
echo nl2br($errors);
?>
<?php include 'template/bottom.php'; ?>

Answer 1

$myemail = 'louie540x#gmail.com;';
Should be:
$myemail = 'louie540x#gmail.com';
However that may not be your only problem...