UPDATE

.editorconfig

@@ -1,4 +0,0 @@
-[*.cs]
-
-# CS0618: Type or member is obsolete
-dotnet_diagnostic.CS0618.severity = none

Program.cs

@@ -6,6 +6,8 @@ using System.Data.SqlClient;
 internal class Program
 {
     private static DateTime lastDate = DateTime.MinValue;
+
+    [Obsolete]
     private static void Main(string[] args)
     {
         while (true)
@@ -44,7 +46,7 @@ internal class Program
         }
     }
 
-
+    [Obsolete]
     private static async void NotifyPollingAsync(string url, string token, string proxyUrl, string proxyUsername, string proxyPassword)
     {
         #region check furnace 250
@@ -119,6 +121,8 @@ internal class Program
         return (true, "OK");
 
     }
+
+    [Obsolete]
     private static async Task<(bool status, string msg)> CheckFurnace250()
     {
         int cntEmptyPOID = 0;