Unity Ads not initializing in SDK Build - work in editor.

I followed the Unity Developer Integrations Guides and everything works great in the editor. When built to SDK ads do not initialize resulting in non-responsive ad buttons on Android.

  • Advertisement package is up to date
  • Correct game ID references for appropriate platforms.
  • Attempting to initialize in the opening scene.
  • Enable test mode checked.

Below is my initialization script - which returns “Unity Ads initialization complete.” in the console editor.
Any guidance would be much appreciated.

using UnityEngine;
using UnityEngine.Advertisements;
public class AdsInitializer : MonoBehaviour, IUnityAdsInitializationListener
{
[SerializeField] string _androidGameId;
[SerializeField] string _iOSGameId;
[SerializeField] bool _testMode = true;
private string _gameId;
void Awake()
{
InitializeAds();
}
public void InitializeAds()
{
_gameId = (Application.platform == RuntimePlatform.IPhonePlayer)
? _iOSGameId
: _androidGameId;
Advertisement.Initialize(_gameId, _testMode, this);
}
public void OnInitializationComplete()
{
Debug.Log(“Unity Ads initialization complete.”);
}
public void OnInitializationFailed(UnityAdsInitializationError error, string message)
{
Debug.Log($“Unity Ads Initialization Failed: {error.ToString()} - {message}”);
}
}

I believe I have identified the problem as IUnityAdsInitializationListener not sending callbacks. Any ideas for how to proceed from here?

Solved: MAKE SURE YOUR DEVICE HAS AN ACTIVE INTERNET CONNECTION! lol