AdColony-- works on testing but not on published

I created my first game using AdColony recently. The ads showed up during test mode (as a placeholder) but when I published the game-- and set it to real ads-- they didn't show up at all.

My code: private const string ANDROID_VERSION = "version:1.2,store:google"; private const string ZONE_ID = ""; private const string ANDROID_APP_ID = "";

     public void Initialize()
     {
         AdColony.OnVideoFinished = AdHandler;
         if (Application.platform == RuntimePlatform.Android)
             AdColony.Configure(ANDROID_VERSION, ANDROID_APP_ID, ZONE_ID);
         //if(Application.platform == RuntimePlatform.IPhonePlayer)
         //    AdColony.Configure(ANDROID_VERSION, ANDROID_APP_ID, ZONE_ID);
         Debug.Log("Todo: iOS implementation");
     }
     // Use this for initialization
     void Start () {
         
         if (instance != null)
         {
             //Don't make two of em!
             Destroy(this.gameObject);
             return;
         }
         else
         {
             instance = this;
             Object.DontDestroyOnLoad(this.gameObject);
             //StartCoroutine(StartAdSystem());
         }
 
     }
 
     /*
     IEnumerator StartAdSystem()
     {
         if (Advertisement.isSupported)
         { // If runtime platform is supported...
             Advertisement.Initialize(); // ...initialize.
         }
 
         while (!Advertisement.isInitialized || !Advertisement.IsReady())
         {
             yield return new WaitForSeconds(0.5f);
         }
         yield return null;
     }
     */
 
     /// <summary>
     /// Reset the ad prompts (should only be called by panels that show a prompt)
     /// </summary>
     public void DisableAllPrompts()
     {
         promptChargeGun.SetActive(false);
         promptKeepPlaying.SetActive(false);
         adFailedPanel.SetActive(false);
         
     }
 
     IEnumerator AdFailurePanel()
     {
         adFailedPanel.SetActive(true);
         yield return new WaitForSeconds(2f);
         adFailedPanel.SetActive(false);
         failureCallbackFunction();
 
     }
 
     /// <summary>
     /// Show the prompt to charge the gun  (returns false if it can't play)
     /// </summary>
     public bool ShowPromptGun()
     {
         if (!Application.isMobilePlatform)
             return false;
         //if (!Advertisement.IsReady(RewardedZoneId))
         //   return false;
         if (!AdColony.IsVideoAvailable(ZONE_ID))
             return false;
         DisableAllPrompts();
         promptChargeGun.SetActive(true);
         return true;
 
     }
 
     /// <summary>
     /// Show the prompt to watch an ad and continue playing (returns false if it can't play the ad)
     /// </summary>
     public bool ShowKeepPlaying()
     {
         if (!Application.isMobilePlatform)
             return false;
         //if (!Advertisement.IsReady(RewardedZoneId))
         //    return false;
         if (!AdColony.IsVideoAvailable(ZONE_ID))
             return false;
         DisableAllPrompts();
         successCallbackFunction = SparePlayer;
         failureCallbackFunction = ReturnToTitle;
         promptKeepPlaying.SetActive(true);
         adProcess = DEATH_PROCESS.WAITING_FOR_AD;
         return true;
     }
 
     /// <summary>
     /// Show the prompt to watch an ad to make the gun charge faster (returns false if you can't play the ad)
     /// </summary>
     /// <returns></returns>
     public bool ShowChargeGun()
     {
         if (!Application.isMobilePlatform)
             return false;
         //if (!Advertisement.IsReady(RewardedZoneId))
         //    return false;
         if (!AdColony.IsVideoAvailable(ZONE_ID))
             return false;
         DisableAllPrompts();
         successCallbackFunction = SparePlayer;
         failureCallbackFunction = ReturnToTitle;
         promptChargeGun.SetActive(true);
         adProcess = DEATH_PROCESS.WAITING_FOR_AD;
         return true;
     }
 
 
     /// <summary>
     /// The player chose to watch an ad to keep going
     /// </summary>
     public void RunSparePlayerAd()
     {
         PlayAd(SparePlayer, ReturnToTitle);
     }
 
     public void ReturnToTitle()
     {
         SceneManager.LoadScene("Title");
     }
 
     void SparePlayer()
     {
         PlayerController.instance.RevivePlayer();
         DisableAllPrompts();
     }
 
 
     public void RunChargeGunAd()
     {
         PlayAd(ChargeGun, DoNothing);
     }
 
     void ChargeGun()
     {
         GlobalVars.instance.chargeUpgrades++;
         DisableAllPrompts();
     }
 
     void DoNothing()
     {
 
     }
 
     private void ShowAdFailed()
     {
         DisableAllPrompts();
         adFailedPanel.SetActive(true);
         StartCoroutine(AdFailurePanel());
     }
 
     public delegate void ON_AD_OVER();
     public ON_AD_OVER successCallbackFunction;
     public ON_AD_OVER failureCallbackFunction;
 
 
 
     /// <summary>
     /// Play an ad and run a function if it works
     /// </summary>
     /// <param name="s">void to call if successful</param>
     /// <param name="f">void to call if failure</param>
     private void PlayAd(ON_AD_OVER s, ON_AD_OVER f)
     {
         successCallbackFunction = s;
         failureCallbackFunction = f;
 
         /*
         UnityEngine.Advertisements.ShowOptions options = new ShowOptions();
         options.resultCallback = AdHandler;
         Advertisement.Show(RewardedZoneId, options);
         */
         
         AdColony.ShowVideoAd(ZONE_ID);
 
         //StartCoroutine(WaitForAd());
     }
 
     void AdHandler(bool adWasShown)
     {
         switch (adWasShown)
         {
             case false:
                 ShowAdFailed();
                 break;
             case true:
                 successCallbackFunction();
                 break;
         }
     }