PHP Mailer | Problem when trying to send emails with Gmail

I am trying to make a registration form with password confirmation with PHPMailer. My code for my phpmailer data

function enviarEmail($email, $nombre, $asunto, $cuerpo){

        require_once 'PHPMailer/PHPMailerAutoload.php';

        $mail = new PHPMailer();
        $mail->isSMTP();
        $mail->SMTPDebug = 1;
        $mail->SMTPAuth = true;
        $mail->SMTPSecure = 'tls';
        $mail->Host = "smtp.gmail.com";
        $mail->Port = 587;
        $mail->IsHTML(true);
        $mail->Username = "[email protected]";
        $mail->Password = "MiContraseña";

        $mail->setFrom("[email protected]");

        $mail->Subject = $asunto;
        $mail->Body    = $cuerpo;
    $mail->addAddress($email);


        if($mail->send())
        return true;
        else
        return false;
    }

In the error of doing I get the following:

2018-09-26 14:23:50 SMTP ERROR: Failed to connect to server: (0) 2018-09-26 14:23:50 SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting 

Then, I realized that when I open my gmail account I get the following message:

When I clicked to see activity, I get another message that is as follows:

And I do not know if the problem has to do with the permissions that my account has or if there is a better way to solve ..