LOGIN ID PASS 2FA M.FB

                            #region CODE LOGIN = 2FA RỒI GET COOKIE
                            RequestHTTP requestlogin = new RequestHTTP("", ProxyUrl: proxy);
                            row.Status = "Login ID|PASS|2FA";
                            string html1 = requestlogin.Get("https://mobile.facebook.com/").Result;
                            if (string.IsNullOrEmpty(html1))
                            {
                                row.Status = "Lỗi mạng";
                                return;
                            }
                            string datapost = getdata(html1);
                            string clicklogin = requestlogin.PostAsync("https://mobile.facebook.com/login/device-based/login/async/?refsrc=deprecated&lwv=100", $"&email={pro.UID}&prefill_contact_point={pro.UID}&encpass={pro.Password}" + datapost);
                            if (clicklogin.Contains("DOCTYPE"))
                            {
                                row.Status = "Sai pass!!!";
                                return;
                            }
                            string html2 = requestlogin.Get("https://mobile.facebook.com/checkpoint/?__req=4").Result;
                            datapost = getdata(html2);
                            if (!string.IsNullOrEmpty(pro.SecrectKey))
                            {
                                string code = "";
                                var tfa = new TwoFactorAuth();
                                code = tfa.GetCode(pro.SecrectKey.Replace(" ", "").ToUpper());
                                row.Status = $"CODE : {code}";
                                string clicksend2fa = requestlogin.PostAsync("https://mobile.facebook.com/login/checkpoint/", $"&checkpoint_data=&approvals_code={code}&submit%5BSubmit+Code%5D=Submit+Code" + datapost);
                                row.Status = $"Nhập Code : {code}";
                                string clicksavedevice = requestlogin.PostAsync("https://mobile.facebook.com/login/checkpoint/", $"&checkpoint_data=&name_action_selected=save_device&submit%5BContinue%5D=Continue" + datapost);
                                while (clicksavedevice.Contains("checkpointSubmitButton") || clicksavedevice.Contains("submit[Continue]") || clicksavedevice.Contains("submit[This was me]"))
                                {
                                    if (clicksavedevice.Contains("secure_account_learn_more"))
                                    {
                                        row.Status = "CP LOGIN!";
                                        return;
                                    }
                                    row.Status = "Click Đây là tôi";
                                    clicksavedevice = requestlogin.PostAsync("https://mobile.facebook.com/login/checkpoint/", $"&checkpoint_data=&submit%5BContinue%5D=Continue" + datapost);
                                    clicksavedevice = requestlogin.PostAsync("https://mobile.facebook.com/login/checkpoint/", $"&checkpoint_data=&submit%5BThis+was+me%5D=This+was+me" + datapost);
                                    clicksavedevice = requestlogin.PostAsync("https://mobile.facebook.com/login/checkpoint/", $"&checkpoint_data=&name_action_selected=save_device&submit%5BContinue%5D=Continue" + datapost);
                                }
                            }
                            string cookie = requestlogin.GetCookie();
                            if (cookie.Contains("checkpoint") || !cookie.Contains("c_user"))
                            {
                                row.Status = "Login thất bại";
                                return;
                            }
                            row.Status = $"Đăng nhập thành công";
                            pro.Cookie = cookie;
                            #endregion