How to get symbols from TwinCAT in windows 10?

I have to use Beckhoff I/O in real-time mode (not PLC project), because the final goal is to make a Soft-PLC, where the program runs on the cumputer and not on Beckhoff. So in Visual Studio I wrote a c# code which opens an existing TwinCAT project in background (with a task and some variables linked), activates the configuration and then gets the symbols from that task, so I can use them to control in realtime the variables (e.g. reading an input or writing an output). The problem is I can't get the symbols! (Im using the SymbolLoaderFactory.Create method). I created a class "Controlling" in the same namespace which contains some methods like GoConfig(), Open(), Activate() etc..

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using EnvDTE;
using System.IO;
using TCatSysManagerLib;
using System.Management;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices.ComTypes;
using System.Collections;
using System.Xml;
using TwinCAT.Ads;
using TwinCAT.Ads.ValueAccess;
using TwinCAT.Ads.TypeSystem;
using TwinCAT.TypeSystem;


namespace TCControl
{
    class Program
    {
        [STAThread]
        static void Main(string[] args)
        {
            
            string solName = "solution1"; 
            string solPath = $@"B:\...solutionPath...\{solName}";

            string[] terminal = new string[1];
            terminal[0] = "EK1100";

            string ipAddress = "10.157.4.69.1.1";
            int port = 301;

            Controlling co = new Controlling();
            MessageFilter.Register();
            

            //go to configuration mode
            co.GoConfig(ipAddress);

            
            //open the solution
            string[,] treeItemsandTypes = co.Open(solPath, solName, ipAddress, terminal);
            co.Activate(solPath, solName);
            
            //obtain symbols
            ISymbolLoader symbolLoader = co.SymbolsGetter(ipAddress, port);

            ISymbol[] symbols = new ISymbol[symbolLoader.Symbols.Count];
            
            int i = 0;
            foreach (ISymbol symbol in symbolLoader.Symbols)
            {
                symbols[i] = symbol;
                i++;
            }
            
            Console.WriteLine("\n" + symbols[0].ToString());
            Console.WriteLine("\n" + symbols[1].ToString());

All projects I created to test this had 2 variables linked to the task. Everything works fine until the SymbolsGetter method. From the Controlling class:

public ISymbolLoader SymbolsGetter(string indirizzo, int port)
        {
            using (TcAdsClient client = new TcAdsClient())
            {
                System.Threading.Thread.Sleep(2000);
                client.Connect(indirizzo, port);

                //Creates the Symbol Objects as hierarchical tree
                SymbolLoaderSettings settings = new SymbolLoaderSettings(SymbolsLoadMode.Flat, ValueAccessMode.IndexGroupOffsetPreferred);

                ISymbolLoader symbolLoader = SymbolLoaderFactory.Create(client, settings);

                //System.Threading.Thread.Sleep(2000);
                return symbolLoader;
            }
        }
    

The Thread.Sleep is because otherwise the client.Connect generated an error. It only works in debug if I add a break point on "return symbolLoader" and if I pass over it with the mouse puntator to see the value (of symbolLoader). I tried to insert another sleep but nothing, it doesn't work. Im actually starting thinking it is black magic. Another problem is that I can't get symbols from all projects (nether using the debug technique of before). And even when it works I can't use the name of the symbol to write a high/low signal to that variable. So nothing is working, I'm just able to create and open a project, a task etc. Just one more information: im using windows 10 (maybe TwinCAT works better on windows 7 or xp, but I have to make it work on windows 10). I have to do everything without touching or seeing the TwinCAT project window, it has to stay in background. I'm not a programmer and I'm quite new into the Beckhoff/TwinCAT world. Please if anyone can help me I'd be incredibly thankful to him.