[Resolved] WPML API response error 403; cant enter site key

Hi Bobby,

thanks for your reply. As said, there is nothing blocking traffic on my site.

A curl request via WP-CLI's eval like this worked just fine:

```
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'hidden link');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "action=site_key_validation&site_key=XXXXXX&site_url=hidden link");
$headers = array();
$headers[] = 'Content-Type: application/x-www-form-urlencoded';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$result = curl_exec($ch);
if (curl_errno($ch)) {
echo 'Error:' . curl_error($ch);
}
curl_close($ch);
```

Resulted with a correct answer like this - no 403:

```
O:8:"stdClass":6:{s:4:"info";a:1:{s:19:"site_key_validation";s:19:"Site key validation";}s:7:"success";s:7:"Success";s....
```

But running nearly the same via wp_remote_post() returns in error 403.

---------

After fumbling around i finally could solve it:

wp_remote_post() does not include any User-agent wheras curl() does per default.
api.wpml.org blocks request without User-agent, resulting in 403.

So the quite simple solution - no firewall settings or whatever - is:

```
function my_http_request_args($args) {
$args['user-agent'] = 'WordPress';
return $args;
}
add_filter('http_request_args', 'my_http_request_args');
```

The user-agent string can be whatever you like. It also worked with "something" or curl's default "curl/7.74.0".

---------

Remaining question:

Where does the user agent get lost in wordpress' codebase