[ADDITION] tried to fix the async methods.

Client/Client.cs

@@ -48,6 +48,9 @@ namespace Client
 
         private void OnReadComplete(IAsyncResult ar)
         {
+            if (ar == null || (!ar.IsCompleted) || (!this.stream.CanRead) || !this.tcpClient.Client.Connected)
+                return;
+
             int amountReceived = stream.EndRead(ar);
 
             if (totalBufferReceived + amountReceived > 1024)
@@ -140,6 +143,9 @@ namespace Client
 
                 case JSONConvert.RANDOMWORD:
                     //Flag byte for receiving the random word.
+                    int lobbyId = JSONConvert.GetLobbyID(payload);
+
+                    if(data.Lobby?.ID == lobbyId)
                     ViewModels.ViewModelGame.HandleRandomWord(JSONConvert.GetRandomWord(payload));
                     break;
                 default:

Server/Models/ServerClient.cs

@@ -9,6 +9,8 @@ using System.Diagnostics;
 using System.IO;
 using System.Net.Sockets;
 using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
 using static SharedClientServer.JSONConvert;
 
 namespace Server.Models
@@ -181,13 +183,15 @@ namespace Server.Models
                     int id = JSONConvert.GetLobbyID(payload);
                     ServerCommunication.INSTANCE.JoinLobby(this.User, id);
                     sendMessage(JSONConvert.ConstructLobbyJoinSuccessMessage());
+                    ServerCommunication.INSTANCE.sendToAll(JSONConvert.ConstructLobbyListMessage(ServerCommunication.INSTANCE.lobbies.ToArray()));
 
-                    serverCom.SendToLobby(serverCom.GetLobbyForUser(User), JSONConvert.GetMessageToSend(RANDOMWORD, new
+                    Task.Run(SendLobbyData);
+
+                    serverCom.sendToAll(JSONConvert.GetMessageToSend(JSONConvert.RANDOMWORD, new
                     {
+                        id = serverCom.GetLobbyForUser(User).ID,
                         word = JSONConvert.SendRandomWord("WordsForGame.json")
                     }));
-
-                    ServerCommunication.INSTANCE.sendToAll(JSONConvert.ConstructLobbyListMessage(ServerCommunication.INSTANCE.lobbies.ToArray()));
                     break;
                 case LobbyIdentifier.LEAVE:
                     id = JSONConvert.GetLobbyID(payload);
@@ -198,6 +202,20 @@ namespace Server.Models
             }
         }
 
+        private async void SendLobbyData()
+        {
+            string result = await WaitForData();
+            if(result == "bruh momento")
+            {
+            }
+        }
+
+        private async Task<string> WaitForData()
+        {
+            await Task.Delay(1000);
+            return "bruh momento";
+        }
+
         /// <summary>
         /// sends a message to the tcp client
         /// </summary>

Server/Models/ServerCommunication.cs

@@ -90,7 +90,7 @@ namespace Server.Models
         /// send a message to all tcp clients in the list
         /// </summary>
         /// <param name="message">the message to send</param>
-        public void sendToAll(byte[] message)
+        public async void sendToAll(byte[] message)
         {
             foreach (ServerClient sc in serverClients)
             {

SharedClientServer/JSONConvert.cs

@@ -184,6 +184,7 @@ namespace SharedClientServer
             int index = random.Next(0, 24);
 
             Debug.WriteLine($"[SERVERCLIENT] Sending random words {words}");
+
             return words.words[index];
         }