IAP Products won’t reveal their information

Hello,

I am trying to implement non-consumable IAP items.

When I load them with 

store.init("google", transactionCallback)

 and then

store.loadProducts(listOfProducts, productCallback)

, should localizedPrice etc. work when the app is not yet published? I don’t get any result when I try to get the product information. I published games with IAP on Android before, but I can’t remember if this was a problem then.

When I change the listOfProducts, license key and bundle ID to those of an app that I have already published, I can get localizedPrice etc., so this shouldn’t be a code problem.