problem with loginregister

<?php

    $servername = "mysql-xxnorxx.alwaysdata.net";
    $server_username = "xxnorxx";
    $server_password = "*****";
    $dbName = "xxnorxx_testdb";

    //$username = "2000nor";
    //$password = "123456";

    $username = $_POST["usernamePost"]; //"2000nor";
    $password = $_POST["passwordPost"]; //"123456";

    //Make Connection
    $conn = new mysqli($servername, $server_username, $server_password, $dbName);
    //Check Connection
    if(!$conn)
    {
        die("Connection Faled.". mysqli_connect_error());
    }
    else echo("Connection Success");


    $sql = "INSERT INTO users (username, password)
            VALUES ('".$username."','".$password."')";
    $result = mysqli_query($conn, $sql);

    if (!result) echo "there was an error";
    else echo "Everything's ok.";


?>