Why my ads is not visible on final build just in editor?

I have some ads on my game like reward video and interstitial video Reward video needs to play when i pres the +20k money button and interstitial when you select a car. In editor everything works perfect but in build nothing work I tried all methods that i find on the internet but is the same problem. interstitial ad : public string mySurfacingId = "Interstitial"; string gameId = "4****9"; bool testMode = false; void Start() { // Initialize the Ads service: Advertisement.Initialize(gameId); } public void ShowInterstitialAd() { // Check if UnityAds ready before calling Show method: if (Advertisement.IsReady()) { Advertisement.Show(mySurfacingId); // Replace mySurfacingId with the ID of the placements you wish to display as shown in your Unity Dashboard. } else { Debug.Log("Interstitial ad not ready at the moment! Please try again later!"); } } video reward : private string gameId = "4****9"; Button myButton; public string mySurfacingId = "rewardedVideo"; public MoneyMNG Money; public bool testMode; void Start() { myButton = GetComponent(); Advertisement.Initialize(gameId,testMode); // Set interactivity to be dependent on the Ad Unit or legacy Placement’s status: myButton.interactable = Advertisement.IsReady(mySurfacingId); // Map the ShowRewardedVideo function to the button’s click listener: if (myButton) myButton.onClick.AddListener(ShowRewardedVideo); // Initialize the Ads listener and service: Advertisement.AddListener(this); } // Implement a function for showing a rewarded video ad: public void ShowRewardedVideo() { // Check if UnityAds ready before calling Show method: if (Advertisement.IsReady(mySurfacingId)) { Advertisement.Show(mySurfacingId); } } // Implement IUnityAdsListener interface methods: public void OnUnityAdsReady(string surfacingId) { // If the ready Ad Unit or legacy Placement is rewarded, activate the button: if (surfacingId == mySurfacingId) { myButton.interactable = true; } } public void OnUnityAdsDidFinish(string surfacingId, ShowResult showResult) { // Define conditional logic for each ad completion status: if (showResult == ShowResult.Finished) { // Reward the user for watching the ad to completion. PlayerPrefs.SetInt("Money", PlayerPrefs.GetInt("Money") + 20000); Money.Update2(); Debug.Log("Rewarded"); } else if (showResult == ShowResult.Skipped) { // Do not reward the user for skipping the ad. } else if (showResult == ShowResult.Failed) { } } public void OnUnityAdsDidError(string message) { // Log the error. } public void OnUnityAdsDidStart(string surfacingId) { // Optional actions to take when the end-users triggers an ad. }