Why doesn't AdMob advertising work when testing on a phone?

Question

Android

Added admob ad blocks to the game (with a reward and a banner), registered the code (specified a test device). I decided to check on the phone for a test. But nothing showed, advertising did not work. It seems that I did everything correctly (as in the documentation). but alas. Here is the code:
Banner:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using GoogleMobileAds.Api;
public class banner_wonna_see : MonoBehaviour {

    private BannerView bannerView;

    public void Start()
    {
        // Initialize the Google Mobile Ads SDK.
        MobileAds.Initialize(initStatus => { });

        this.RequestBanner();
    }

    private void RequestBanner()
    {
        string adUnitId = "айди правильное";

        // Create a 320x50 banner at the top of the screen.
        this.bannerView = new BannerView(adUnitId, AdSize.Banner, AdPosition.Top);

        // Create an empty ad request.
        AdRequest request = new AdRequest.Builder().AddTestDevice(AdRequest.TestDeviceSimulator).AddTestDevice("айди моего телефона").Build();

        // Load the banner with the request.
        this.bannerView.LoadAd(request);

        // Called when an ad request has successfully loaded.
        this.bannerView.OnAdLoaded += this.HandleOnAdLoaded;
        // Called when an ad request failed to load.
        this.bannerView.OnAdFailedToLoad += this.HandleOnAdFailedToLoad;
        // Called when an ad is clicked.
        this.bannerView.OnAdOpening += this.HandleOnAdOpened;
        // Called when the user returned from the app after an ad click.
        this.bannerView.OnAdClosed += this.HandleOnAdClosed;
        // Called when the ad click caused the user to leave the application.
        this.bannerView.OnAdLeavingApplication += this.HandleOnAdLeavingApplication;
    }

    public void HandleOnAdLoaded(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleAdLoaded event received");
    }

    public void HandleOnAdFailedToLoad(object sender, AdFailedToLoadEventArgs args)
    {
        MonoBehaviour.print("HandleFailedToReceiveAd event received with message: "+ args.Message);
    }

    public void HandleOnAdOpened(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleAdOpened event received");
    }

    public void HandleOnAdClosed(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleAdClosed event received");
    }

    public void HandleOnAdLeavingApplication(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleAdLeavingApplication event received");
    }
}

With award:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using GoogleMobileAds.Api;
using UnityEngine.SceneManagement;
public class see_rek : MonoBehaviour {
    public GameObject mon;
    private float add_cash = 100f;

    private const string vid = "правильное айди";
    private RewardBasedVideoAd rewardBasedVideo;

    void Start()
    {
        this.rewardBasedVideo = RewardBasedVideoAd.Instance;

        // Called when an ad request has successfully loaded.
        rewardBasedVideo.OnAdLoaded += HandleRewardBasedVideoLoaded;
        // Called when an ad request failed to load.
        rewardBasedVideo.OnAdFailedToLoad += HandleRewardBasedVideoFailedToLoad;
        // Called when an ad is shown.
        rewardBasedVideo.OnAdOpening += HandleRewardBasedVideoOpened;
        // Called when the ad starts to play.
        rewardBasedVideo.OnAdStarted += HandleRewardBasedVideoStarted;
        // Called when the user should be rewarded for watching a video.
        rewardBasedVideo.OnAdRewarded += HandleRewardBasedVideoRewarded;
        // Called when the ad is closed.
        rewardBasedVideo.OnAdClosed += HandleRewardBasedVideoClosed;
        // Called when the ad click caused the user to leave the application.
        rewardBasedVideo.OnAdLeavingApplication += HandleRewardBasedVideoLeftApplication;
    }
    public void add_den()
    {
        AdRequest request = new AdRequest.Builder().AddTestDevice(AdRequest.TestDeviceSimulator).AddTestDevice("айти телефона").Build();
        this.rewardBasedVideo.LoadAd(request, vid);
        UserOptToWatchAd();
    }

    public void HandleRewardBasedVideoLoaded(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleRewardBasedVideoLoaded event received");
    }

    public void HandleRewardBasedVideoFailedToLoad(object sender, AdFailedToLoadEventArgs args)
    {
        MonoBehaviour.print(
            "HandleRewardBasedVideoFailedToLoad event received with message: "+ args.Message);
    }

    public void HandleRewardBasedVideoOpened(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleRewardBasedVideoOpened event received");
    }

    public void HandleRewardBasedVideoStarted(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleRewardBasedVideoStarted event received");
    }

    public void HandleRewardBasedVideoClosed(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleRewardBasedVideoClosed event received");
    }

    public void HandleRewardBasedVideoRewarded(object sender, Reward args)
    {
        string type = args.Type;
        double amount = args.Amount;
        MonoBehaviour.print(
            "HandleRewardBasedVideoRewarded event received for "
                        + amount.ToString() + " " + type);
        mon.GetComponent<money>().cash += add_cash;
    }

    public void HandleRewardBasedVideoLeftApplication(object sender, System.EventArgs args)
    {
        MonoBehaviour.print("HandleRewardBasedVideoLeftApplication event received");
    }

    private void UserOptToWatchAd()
    {
        if (rewardBasedVideo.IsLoaded())
        {
            rewardBasedVideo.Show();
        }
    }
}