Fail to operate Soomla/Unity and do not understand the error

Hey all,

I'm integrating the Soomla store to my Unity game but it wouldn't work.

My problem is : when i run it on my android device and i press the butons for pay with google play, nothing is happening, there is no errors and no message. And when I debug it whit unity, there is no error message. If needed I can provide some logs.

I explain my steps below :

First I drag the CoreEvents and the StoreEvents on my splash screen scene. Then I made three files, the IStoreAssets, another for the initialisation and a script who call functions for buy items.

Next, I setup Soomla settings in Unity, google integrated products and plublished my app in closed alpha.

Implementation of the IStoreAssets :

 public int GetVersion() {
     return 0;
 }
 
 public VirtualCurrency[] GetCurrencies() {
     return new VirtualCurrency[]{};
 }
 
 public VirtualGood[] GetGoods() {
     return new VirtualGood[] {UFO_SKIN_LTVG, SUPERHERO_SKIN_LTVG, SPACESHIP_SKIN_LTVG, NO_ADS_LTVG};
 }
 
 public VirtualCurrencyPack[] GetCurrencyPacks() {
     return new VirtualCurrencyPack[] {};
 }
 
 public VirtualCategory[] GetCategories() {
     return new VirtualCategory[]{};
 }
 
 /** Static Final Members **/
 
 public static VirtualGood UFO_SKIN_LTVG = new LifetimeVG(
     "Ufo skin",                                 // name
     "Ufo skin desc",                                 // description
     "ufo_skin",                                // item id
     new PurchaseWithMarket(new MarketItem("ufo_skin", 1.00)));
 
 public static VirtualGood SUPERHERO_SKIN_LTVG = new LifetimeVG(
     "Super Hero skin",                                                 
     "Super Hero skin desc",                                                 
     "superhero_skin",                                        
     new PurchaseWithMarket(new MarketItem("superhero_skin", 1.00)));
 
 public static VirtualGood SPACESHIP_SKIN_LTVG = new LifetimeVG(
     "Spaceship skin",                                                         
     "Spaceship skin desc",                                                 
     "spaceship_skin",                                        
     new PurchaseWithMarket(new MarketItem("spaceship_skin", 1.00)));
 
 public static VirtualGood NO_ADS_LTVG = new LifetimeVG(
     "No Ads",                                                     
     "No More Ads!",    
             "no_ads",                                             
     new PurchaseWithMarket(new MarketItem("no_ads", 1.00)));

The initialisation ( I made it on splashscreen launching) :

 void Start () {
     SoomlaStore.Initialize (new StoreAssets());
 }

The function script (I use it on 4 differents butons on another scene) :

 public void RemoveAddsPressed () {
     StoreInventory.BuyItem ("no_ads");
 }
 
 public void BuyUfoSkinPressed () {
     StoreInventory.BuyItem ("ufo_skin");
 }
 
 public void BuySuperHeroSkinPressed () {
     StoreInventory.BuyItem ("superhero_skin");
 }
 
 public void BuySpaceShipSkinPressed () {
     StoreInventory.BuyItem ("spaceship_skin");
 }

I've tested with the soomla higway to. Like this :

 void Start () {
     SoomlaHighway.Initialize();
     SoomlaStore.Initialize (new StoreAssets());
 }

But this code make the game crash on splashscreen.

Can someone help me to see if I made a mistake on the code or in another part of the integration ?

Here is a link to my first post on the soomla aswer page : http://answers.soom.la/t/fail-to-operate-soomla-and-do-not-understand-the-error/3208?u=d_lopes

Thank's