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://, 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.