How to use the async function of System.timer.Timers?

Question

I’m trying to deploy an asynchronous timer in my application. NET, so that the Forms is interactive while the back end makes a request and deserializes the answer of it, assembling everything in a virtual table that will update the Forms. When I tried to deploy the example available in Microsoft Docs I did not get results, it only got worse when I decided to use System.timer.Timer.Synchronizingobject = this to use with the Forms in question:

private System.Timers.Timer tempo = new System.Timers.Timer(10000);
        
    try
            {
                tempo.SynchronizingObject = null;
                tempo.AutoReset = true;// no exemplo não usava  mas tentei colocar pra ver se haveria alguma mudança
                tempo.Elapsed += async (sender, e) => await UpdateTimerCTRL_Tick();
               // ThreadPool.QueueUserWorkItem(UpdateTimerCTRL_Tick);
                tempo.Start();
            }
            catch (Exception exception)
            {
                ClientUtils.HandleException(this.Text, exception);
                tempo?.Dispose();
            }
            //SiemensOPC2OPCUA();
        }
        private async Task UpdateTimerCTRL_Tick()
        {
            try
            {
                ////////////////////////
                CadeiaAtualiza();///faz a atualização da tabela virtual
                ////////////////////////
            }
            catch (Exception exception)
            {
                ClientUtils.HandleException(this.Text, exception);

            }
        }

the main error is even making the table mount not update and not having the thread end, in the long run happens a thread looting error.