access remote Digitaocean databases PHP - Mysql

I want to use the new DigitalOcean MySQL Managed Databases with my PHP application but I’m getting this error here:

https://distanciauss.com/test.php

Connect Error (2003) Can’t connect to MySQL server on ‘db-mysql-aldodiego-2019-do-user-6529643-0.db.ondigitalocean.com’ (110)

already change the database password type to: mysql_native_password

I still have the same error can someone help me connect?

I am using this code

<?php
$mysqli = new mysqli('<host>', '<user>', '<password>', '<database>');

/*
 * This is the "official" OO way to do it,
 * BUT $connect_error was broken until PHP 5.2.9 and 5.3.0.
 */
if ($mysqli->connect_error) {
    die('Connect Error (' . $mysqli->connect_errno . ') '
            . $mysqli->connect_error);
}

/*
 * Use this instead of $connect_error if you need to ensure
 * compatibility with PHP versions prior to 5.2.9 and 5.3.0.
 */
if (mysqli_connect_error()) {
    die('Connect Error (' . mysqli_connect_errno() . ') '
            . mysqli_connect_error());
}

echo 'Success... ' . $mysqli->host_info . "\n";

$mysqli->close();
?>