failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found

Where is you homepage and the pro version?
I test this source and got 404 error.

        $apiUrl = "https://myhost/api/get_nonce/?controller=user&method=register";
        $response = file_get_contents($apiUrl);
        $array = json_decode($response, true);
        echo "<pre>";
        print_r($array);
        $email="[email protected]";
        $arrEmail = explode("@",$email);
        $username = $arrEmail[0];
        $password = "66666666B";
        $apiUrlRegister = "https://myhost/api/user/register/?username=".$username."&insecure=cool&display_name=".$username."&email=".$email."&nonce=".$array['nonce']."&user_pass=".$password;
echo $apiUrlRegister;
        $response2 = file_get_contents($apiUrlRegister);

this code output

Array
(
[status] => ok
[controller] => user
[method] => register
[nonce] => ffeb5cf1e8
)

https://myhost/api/user/register/?username=aaaa&insecure=cool&display_name=aaaa&[email protected]&nonce=ffeb5cf1e8&user_pass=66666666B

Warning: file_get_contents(https://…@gmail.com&nonce=ffeb5cf1e8&user_pass=66666666B): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found
in test.php on line 14

How to solve this problem?