//Step 4 modify purchasing
public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs args)
{
if (String.Equals(args.purchasedProduct.definition.id, removeAds, StringComparison.Ordinal))
{
Debug.Log("remove ads for this user");
if (PlayerPrefs.HasKey("ads") == false)
{
PlayerPrefs.SetInt("ads", 0);
}
UnityAds.RemoveBanner();
GameObject.Find("txt_rm_ads").GetComponent <TMPro.TextMeshProUGUI>().text = "Thank You";
}
else
{
Debug.Log("Purchase Failed");
}
return(PurchaseProcessingResult.Complete);
}