Help with migration to new domains.

A letter came, I did not understand what to change.

using System;
using System.Linq;
using System.Diagnostics;
using System.IO;
using ThomsonReuters.Dss.Api.StandardExtractions;
using ThomsonReuters.Dss.Api;
using ThomsonReuters.Dss.Api.Content;
using ThomsonReuters.Dss.Api.Extractions;
using ThomsonReuters.Dss.Api.Extractions.ExtractionRequests;
using ThomsonReuters.Dss.Api.Extractions.ReportExtractions;
using ThomsonReuters.Dss.Api.Extractions.ReportTemplates;
using ThomsonReuters.Dss.Api.Extractions.Schedules;
using ThomsonReuters.Dss.Api.Extractions.SubjectLists;
using ThomsonReuters.Dss.Api.Search;
using ThomsonReuters.Dss.Core.RestApi;
using System.Text;
using ICSharpCode.SharpZipLib.GZip;
using System.Text.RegularExpressions;


namespace RefinitivHistoryTesting
{
    
    class Program  
    {
        public static string getExtractionID(string note)
        {
            string pattern = @"Extraction ID: ([0-9]+)";
            string extractionID = "";
            Regex rgx = new Regex(pattern);
            Match match = rgx.Match(note);
            if (match.Success)
            {
                string[] words = match.Value.Split(':');
                extractionID = words[1].ToString().Trim();
                Console.WriteLine("ExtractionID: {0}", extractionID);
            }
            return extractionID;
        }
        static void Main(string[] args)
        {
            //-----------------------------------------------------------------
            //Connect and authenticate to the DSS server:
            //-----------------------------------------------------------------
            Uri dssUri = new Uri("https://hosted.datascopeapi.reuters.com/RestApi/v1/");
            string dssUserName = "****";
            string dssUserPassword = "****";


            //var out_dir = @".\Storage\";
       
            var SearchContext = new SearchContext(dssUri, dssUserName, dssUserPassword);


            var ExtractionsContext = new ExtractionsContext(dssUri, dssUserName, dssUserPassword);
            ExtractionsContext.Options.AutomaticDecompression = false;
            try
            {
                ExtractionsContext.DefaultRequestHeaders.Add("x -direct-download", "true");
            }
            catch (Exception)
            { }


            var availableMbPFields = ExtractionsContext.GetValidContentFieldTypes(ReportTemplateTypes.TickHistoryRaw);
            var availableTnSFields = ExtractionsContext.GetValidContentFieldTypes(ReportTemplateTypes.TickHistoryTimeAndSales);