Problem with connecting to AWS EC2 Server ...

Hey guys,

first of all I'm a Noob in (Unity) Networking.
In my new project I wanted to run a Server on my Amazon EC2 Cloud by using the Unity Unet Networking but the problem is that I can't establish a connection between Server and Client :(
So, first of all I wrote a script which detects headless mode in Unity (it detects that the project was started by my Server) and then starts a Server (if true) or a client (if false):

 public class MatchMakerScript : MonoBehaviour {
 
     private NetworkManager networkManager;
     public bool useDedicatedServers = true;
     NetworkClient myClient;
 
     public void Awake ()
     {
         networkManager = GameObject.Find ("NetworkManagerScript").GetComponent<NetworkManager> ();
         networkManager.networkPort = 22;
         networkManager.networkAddress ="X.X.X.X";
         play ();
     }
 
     bool IsHeadless()
     {
         return SystemInfo.graphicsDeviceType == GraphicsDeviceType.Null;
     }
 
     public void play ()
     {
             if (IsHeadless()) {
                 networkManager.StartServer ();
             }
             else
             {
             networkManager.StartClient ();
             myClient = new NetworkClient();
             myClient.RegisterHandler(MsgType.Connect, OnConnected);   
             }
     }
 
     public void OnConnected(NetworkMessage netMsg)
     {
         Debug.Log("Connected to server");
     }
 }

Then I set up my server on AWS (EC2) with 'All Inbound Ports' and 'All Outbound Ports'. After that I build a Linux (Headless Mode) Program and imported it on my Server (via SSH). After that I converted the program via: chmod +x ./game.x86_64 and started it in this way: ./game.x86_64 -force-opengl.
After finishing that, the Server began to run and I switched the Platform on Unity to Android. I started the Game but it didn't connect and it still doesn't connect ... I don't know what I'm doing wrong and I'm really desperate ... ... PLEASE HELP ME :D