Перестали приходить письма через UniMail?

<form>
                <!-- Hidden Required Fields -->
                <input type="hidden" name="project_name" value="MAKETORNADO">
                <input type="hidden" name="admin_email" value="test@maketornado.com">
                <input type="hidden" name="form_subject" value="MAKETORNADO - Презентация">
                <input type="text" name="E-mail" class="input-mask" placeholder="Ваш номер телефона" required="required">
                <button type="submit">Отправить презентацию</button>
            </form>

<?php

$method = $_SERVER['REQUEST_METHOD'];

//Script Foreach
$c = true;
if ( $method === 'POST' ) {

	$project_name = trim($_POST["project_name"]);
	$admin_email  = trim($_POST["admin_email"]);
	$form_subject = trim($_POST["form_subject"]);

	foreach ( $_POST as $key => $value ) {
		if ( $value != "" && $key != "project_name" && $key != "admin_email" && $key != "form_subject" ) {
			$message .= "
			" . ( ($c = !$c) ? '<tr>':'<tr style="background-color: #f8f8f8;">' ) . "
			<td style='padding: 10px; border: #e9e9e9 1px solid;'><b>$key</b></td>
			<td style='padding: 10px; border: #e9e9e9 1px solid;'>$value</td>
		</tr>
		";
	}
}
} else if ( $method === 'GET' ) {

	$project_name = trim($_GET["project_name"]);
	$admin_email  = trim($_GET["admin_email"]);
	$form_subject = trim($_GET["form_subject"]);

	foreach ( $_GET as $key => $value ) {
		if ( $value != "" && $key != "project_name" && $key != "admin_email" && $key != "form_subject" ) {
			$message .= "
			" . ( ($c = !$c) ? '<tr>':'<tr style="background-color: #f8f8f8;">' ) . "
			<td style='padding: 10px; border: #e9e9e9 1px solid;'><b>$key</b></td>
			<td style='padding: 10px; border: #e9e9e9 1px solid;'>$value</td>
		</tr>
		";
	}
}
}

$message = "<table style='width: 100%;'>$message</table>";

function adopt($text) {
	return '=?UTF-8?B?'.Base64_encode($text).'?=';
}

$headers = "MIME-Version: 1.0" . PHP_EOL .
"Content-Type: text/html; charset=utf-8" . PHP_EOL .
'From: '.adopt($project_name).' <'.$admin_email.'>' . PHP_EOL .
'Reply-To: '.$admin_email.'' . PHP_EOL;

mail($admin_email, adopt($form_subject), $message, $headers );

Сам скрипт(UniMail) не трогал. До недавних пор всё было ок.
Хостинг - SpaceWeb

В логах нашёл эту ошибку:
PHP Notice: Undefined variable: message in /home/w/maxru/new_tornado/public_html/mail.php on line 14, referer: maketornado.com

Но почему она перестала определяться?