Urgent ! How to use unity ads in unity 2017.4.40f1

Hello, adarshdesai

Sorry to hear that you are having trouble implementing Unity Ads.
In Unity2017.4.40f1 you can use Unity Ads by turning on the Ads menu in the Services window.




Hope this helps. If you have any other questions please leave a comment.
Have a good day!

p.s: I understand you have a reason for using Unity2017.4.40f1, but I kindly recommend using the latest LTS version of Unity.

 

Since you have turned on the Ads in Services, you already have the SDK, still able to use it.
However, the Advertisement SDK version is 2.0 in Unity2017.4 and the API is quite different from the latest version which is 3.7.5
Here is an example code of how to use Unity ads in Unity2017.4.

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Advertisements;
3.  
4. public class InterstitialAdExample : MonoBehaviour
5. {
6.     [SerializeField] string _androidAdUnitId = "Interstitial_Android";
7.     [SerializeField] string _iOsAdUnitId = "Interstitial_iOS";
8.     string _adUnitId;
9.     string gameId = "yourGameId";
10.     bool testMode = true;
11.  
12.     void Awake()
13.     {
14.         Advertisement.Initialize(gameId, testMode);
15.         // Get the Ad Unit ID for the current platform:
16.         _adUnitId = (Application.platform == RuntimePlatform.IPhonePlayer)
17.             ? _iOsAdUnitId
18.             : _androidAdUnitId;
19.     }
20.  
21.     // Show the loaded content in the Ad Unit:
22.     public void ShowAd()
23.     {
24.         // Note that if the ad content wasn't previously loaded, this method will fail
25.         Debug.Log("Showing Ad: " + _adUnitId);
26.         Advertisement.Show(_adUnitId);
27.     }
28. }

If you copy-paste this code, change gameId, and trigger `ShowAd()`, you will see the test ads as below.



You might want to check how other people implemented Unity Ads in Unity2017.

Hope this helps. And again, I kindly recommend using the latest LTS version of Unity.
Have a good day!