Disply ad not calling in Device

So i'm testing to see if the test ad from Chartboost will work on my android device, i build and ran it no ad appeared on my screen. I followed everything from the Chartboost documentation and also enabled test mode on the website. Here is the scripts that uses Chartboost. My question is do you know whats wrong in my scripts thats preventing to call the test ad?

Menu script where i call the interstitial

 using UnityEngine;
 using System.Collections;
 using Chartboost;
 
 public class Menu2 : MonoBehaviour {
 
 
         private Ray ray;
         private RaycastHit rayCastHit;
 
 
         void Update ()
         {
             
             if(Input.GetMouseButtonDown(0))
             {
                 ray = Camera.main.ScreenPointToRay(Input.mousePosition);
 
                 if(Physics.Raycast(ray, out rayCastHit))
                 {
                     if (rayCastHit.transform.name == "PlayButton")
                     {
                         Application.LoadLevel("Main Game");
                     }
                 }
             }
         }
 
     void Awake() {
         CBBinding.showInterstitial(null);
     }
 
     }

And the script where you put everything from the documentation all in one script

 using UnityEngine;
 using System.Collections;
 using Chartboost;
 
 public class Chart : MonoBehaviour {
 
     void OnEnable() {
         // Initialize the Chartboost plugin
         
         // Replace these with your own Android app ID and signature from the Chartboost web portal
         CBBinding.init("~~HASH~~", "~~HASH~~");
     }
     
     
     void OnApplicationPause(bool paused) {
         // Manage Chartboost plugin lifecycle
         CBBinding.pause(paused);
     }
     
     void OnDisable() {
         // Shut down the Chartboost plugin
         CBBinding.destroy();
     }
     
     
     
     public void Update() {
         if (Input.GetKeyUp(KeyCode.Escape)) {
             if (CBBinding.onBackPressed())
                 return;
             else
                 Application.Quit();
         }
     }
 
 }

If your wondering yes they are all on a gameobject not the same object though. If you know the problem it will be great to tell me, thank you!