Banner AdMob is not showing on Android

Questions & Answers
1

Hello,
I’ve imported AdMob package for Unity and followed the instructions in this link.
Also I’ve created Google AdMob account and currently activated and registered my Android device as a test device. While testing on game play, I receive debug.log notification of successful ad loading. But after creating a build to test on android device, the ad is not showing.
Here is my code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using GoogleMobileAds.Api;
using System;

public class Ads : MonoBehaviour
{

    // Start is called before the first frame update
    void Start()
    {
        ////Initialize Google Mobile Ads
        MobileAds.Initialize(initStatus =>
        {
            Debug.Log("Calling the ad...");
        });


        ////TODO: Remember to remove this before releasing the app.
        List<string> deviceIds = new List<string>();
        //This is the my device ID for testing
        deviceIds.Add("MYDEVICEID");
        RequestConfiguration requestConfiguration = new RequestConfiguration.Builder().SetTestDeviceIds(deviceIds).build();
        MobileAds.SetRequestConfiguration(requestConfiguration);


    }
}

On the inspector, I’ve chosen the Auto Load Enabled. Am I missing something?
Unity version: 2019.4.21f1
AdMob package version: 5.4.0.90
Thanks

2

I checked the device log via Logcat on Android Studio and the below popup up to me:

2021-04-25 22:44:42.965 4191-4318/? I/Ads: GMA Debug BEGIN
2021-04-25 22:44:42.965 4191-4318/? I/Ads: GMA Debug CONTENT {"timestamp":1619379882965,"event":"onNetworkResponse","components":["network_request_36772ca1-01d5-4878-8f01-00d899c2bd16"],"params":{"firstline":{"code":200},"headers":[{"name":null,"value":"HTTP/1.1 200 OK"},{"name":"Alt-Svc","value":"h3-29=\":443\"; ma=2592000,h3-T051=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\""},{"name":"Server","value":"sffe"},{"name":"X-Content-Type-Options","value":"nosniff"},{"name":"Last-Modified","value":"Thu, 03 Oct 2019 10:15:00 GMT"},{"name":"X-Android-Received-Millis","value":"1619379882964"},{"name":"Date","value":"Tue, 20 Apr 2021 11:02:55 GMT"},{"name":"Accept-Ranges","value":"bytes"},{"name":"X-Android-Selected-Protocol","value":"http/1.1"},{"name":"Cache-Control","value":"public, max-age=31536000"},{"name":"X-Android-Response-Source","value":"NETWORK 200"},{"name":"Vary","value":"Accept-Encoding"},{"name":"Cross-Origin-Resource-Policy","value":"cross-origin"},{"name":"Expires","value":"Wed, 20 Apr 2022 11:02:55 GMT"},{"name":"X-Android-Sent-Millis","value":"1619379882866"},{"name":"X-XSS-Protection","value":"0"},{"name":"Age","value":"463310"},{"name":"Content-Type","value":"image/x-icon"}]}}
2021-04-25 22:44:42.965 4191-4318/? I/Ads: GMA Debug FINISH
2021-04-25 22:44:43.069 4191-4191/? I/Ads: Ad failed to load : 1

So I searched for error codes and found it here: AdMob Error Codes & Logs - Google AdMob Community
I figured out I was writing the Ad Unit ID wrong. I typed it correct and now the ads are showing on my test device. Now the problem is fixed.