Product status is always "invalid" (using Cordova plugin purchase)

I am using Purchase Cordova Plugins to use in-app billing in my android app. However, when using an alert with a JSON string product, the product status is always "invalid". Here's an example of my code on this issue:

store.register({
    id:    'test_walker_01',
    alias: 'walker',
    type:   store.CONSUMABLE
});

item_walker = store.get("test_walker_01");

store.when("product").updated(function (product) {
    alert(JSON.stringify(product));
});

store.refresh();

      

        
        
        
      

    

My problem: I cannot access my product information from Google Play.

After a lot of googling and stack overflow, here are the steps I have already followed / checked to find a solution:

• I checked three times that the ID matches the ID of the Developer Console and the type is "managed".
• The product is activated in the developer console.
• I downloaded the same APK to my test phone as the one downloaded in the developer console in Alpha testing.
• I am using a different google account than the one in the developer console.
• I added this (different) account to the list of authorized Gmail accounts.
• The APK I sign and download is version (not debuggable).
• As far as I know, I only use one key to sign all my APKs (referring to this SO question) . I'm not sure how many keys can be used.
• I even uninstalled the app completely, rebooted my phone and reinstalled it.

Thanks for your help!