Contact form not working

I'm having an issue with my website

http://datamatte.com.br/contato-e-suporte.html

The contact form is not working properly, I want to use Google Recaptcha as well.

The fisrt problem, I can press submit without the bot validation
I filled the $recaptcha secret

// Add this only if you use reCaptcha with your Contact Forms
$recaptcha_secret = 'code-given-by-google'; // Your reCaptcha Secret

and uncomented the folowing line of code on sendemail.php

			// Uncomment the following Lines of Code if you want to Force reCaptcha Validation

			if( !isset( $_POST['g-recaptcha-response'] ) ) {
				echo '{ "alert": "error", "message": "Preencha a verificação de segurança e tente novamente" }';
			die;
			}

and the Google Recaptcha code are present on my HTML

The second problem is the message itself

I want to use SMTP, i filled the codes with my SMTP info and when I press "send" or in this case "enviar" in portuguese, the 'wheel' keep spining and the message is not sent nor any kind of error/success message.

I placed my smtp information on the sendemail.php

// If you intend you use SMTP, add your SMTP Code after this Line
$mail->isSMTP();                                      // Set mailer to use SMTP
$mail->Host = 'smtpserver;';  // Specify main and backup SMTP servers
$mail->SMTPAuth = true;                               // Enable SMTP authentication
$mail->Username = 'emailinformatiion';                 // SMTP username
$mail->Password = 'password;                           // SMTP password
$mail->SMTPSecure = 'tls';                            // Enable TLS encryption, `ssl` also accepted
$mail->Port = 587;                                    // TCP port to connect to

and class.phpmailer.php

    /**
     * Which method to use to send mail.
     * Options: "mail", "sendmail", or "smtp".
     * @var string
     */
    public $Mailer = 'smtp';

also

    /**
     * SMTP hosts.
     * Either a single hostname or multiple semicolon-delimited hostnames.
     * You can also specify a different port
     * for each host by using this format: [hostname:port]
     * (e.g. "smtp1.example.com:25;smtp2.example.com").
     * You can also specify encryption type, for example:
     * (e.g. "tls://smtp1.example.com:587;ssl://smtp2.example.com:465").
     * Hosts will be tried in order.
     * @var string
     */
    public $Host = 'smtp.datamatte.com.br:587';

    /**
     * The default SMTP server port.
     * @var integer
     * @TODO Why is this needed when the SMTP class takes care of it?
     */
    public $Port = 587;

    /**
     * What kind of encryption to use on the SMTP connection.
     * Options: '', 'ssl' or 'tls'
     * @var string
     */
    public $SMTPSecure = 'tls';

    /**
     * SMTP username.
     * @var string
     */
    public $Username = 'email';

    /**
     * SMTP password.
     * @var string
     */
    public $Password = 'password';

Maybe I messed up with something trying to make it work

Ok I re-uploaded the original phpmailer core files provided and commented the requested lines of code on sendermail.php

// Uncomment the following Lines of Code if you want to Force reCaptcha Validation

//if( !isset( $_POST['g-recaptcha-response'] ) ) {
//	echo '{ "alert": "error", "message": "Preencha a verificação de segurança e tente novamente" }';
//die;
//}

the same problem is happening.
Waiting Instructions

Waiting a reply...

All code that I post was exemples, this line of code already contains the following code
$mail->Host = 'smtp.datamatte.com.br';

Don't you guys wanna the ftp info to look into the files and solve my problem?

Please, I Bought more time of support just to solve this particular problem, I really need help here!