// hCaptcha request
    using (HttpClient client = new HttpClient())
    {
        var requestContent = new
        {
            type = "hcaptcha",
            sitekey = siteKey,
            url = "https://nopecha.com/demo/hcaptcha#hard",
            key = apiKey
        };

        var response = await client.PostAsJsonAsync(apiUrl, requestContent);

        if (response.IsSuccessStatusCode)
        {
            var responseData = await response.Content.ReadAsAsync<dynamic>();
            string job_id = responseData.data;

            // hCaptcha HTTP 409 ERROR
            var tokenResponse = await client.GetStringAsync($"{apiUrl}?key={apiKey}&id={job_id}");
            var hCaptchaToken = tokenResponse.Trim();

           nopecaptchatext.Text = $"hCaptcha Token: {hCaptchaToken}";
        }
        else
        {
            nopecaptchatext.Text =  $"Error: {response.StatusCode} - {response.ReasonPhrase}";
        }
    }
}