Codeless IAP not working on phone

Is the problem that you are testing from the same google account as publisher's account? Found this as I have the same issue:

"NOTE: A restriction against using the publisher’s Google Account for testing exists, because Google payments does not let you buy items from yourself. Therefore you will need to create a non-publisher Google Account for testing."

SOURCE: https://docs.unity3d.com/Manual/UnityIAPGoogleConfiguration.html

EDIT: In case someone does come by this thread, I found the solution to my problem, and what may be the original posters problem. The symptom was IAP buttons in editor working in so far as they activated the Fake Store, but then those same buttons doing absolutely nothing when clicked in game after building the project (in my case to android). I found that in my purchase handling script my references were not correct. I failed to specifically identify the GooglePlay store ID. My working code ended up looking like this:

     public static string Coins150 = "150coins";
         public static string Coins900 = "900coins";
         public static string Coins2000 = "2000coins";
         public static string Coins5000 = "5000coins";
         public static string Coins30000 = "30000coins";
 
         // Apple App Store-specific product identifier.
 
         // Google Play Store-specific product identifier.
         private static string kProductNameGooglePlayCoins150 = "150coins";
         private static string kProductNameGooglePlayCoins900 = "900coins";
         private static string kProductNameGooglePlayCoins2000 = "2000coins";
         private static string kProductNameGooglePlayCoins5000 = "5000coins";
         private static string kProductNameGooglePlayCoins30000 = "30000coins";
 
         void Start()
         {
             // If we haven't set up the Unity Purchasing reference
             if (m_StoreController == null)
             {
                 // Begin to configure our connection to Purchasing
                 InitializePurchasing();
             }
         }
 
         public void InitializePurchasing() 
         {
             // If we have already connected to Purchasing ...
             if (IsInitialized())
             {
                 // ... we are done here.
                 return;
             }
 
             // Create a builder, first passing in a suite of Unity provided stores.
             var builder = ConfigurationBuilder.Instance(StandardPurchasingModule.Instance());
 
             // Add a product to sell / restore by way of its identifier, associating the general identifier
             // with its store-specific identifiers.
             builder.AddProduct(Coins150, ProductType.Consumable, new IDs(){ {kProductNameGooglePlayCoins150, GooglePlay.Name} });
             builder.AddProduct(Coins900, ProductType.Consumable, new IDs(){ {kProductNameGooglePlayCoins900, GooglePlay.Name} });
             builder.AddProduct(Coins2000, ProductType.Consumable, new IDs(){ {kProductNameGooglePlayCoins2000, GooglePlay.Name} });
             builder.AddProduct(Coins5000, ProductType.Consumable, new IDs(){ {kProductNameGooglePlayCoins5000, GooglePlay.Name} });
             builder.AddProduct(Coins30000, ProductType.Consumable, new IDs(){ {kProductNameGooglePlayCoins30000, GooglePlay.Name} });