Ionic 3 In-app-purchase 2 for ios return null values

Hello… I am using in-app-purchase 2 plugin of ionic v3, and this is the source code
(http://https://github.com/captaincole/ionic-iap2), I created products on apple store,when i try to get products after registered with product id, it shows json values inside that price=null,canPurchase=false, etc except product id and alias.
and after that when click purchase button app crashes.My app is in debug mode and i want to test in-app-purchase products.In-app-purchase product status is ready to submit, and i also enable in-app-purchase when building app through XCODE.

iPhone In App Purchase - response.products are still empty? - Stack Overflow

Another important step that is often overlooked is you need to make sure you have an iOS Paid Applications Contract setup which is located under the “Contracts, Tax, and Banking” section of iTunes connect. First you have to click on the request button, then you have to click on the 3 Set Up buttons (Contact Info, Bank Info, Tax Info)