If you would like to utilize In App Purchase in your app, you will need to upload a new binary that incorporates the In App Purchase API to enable users to make a purchase.
Once you revise and resubmit your binary, you will also need to resubmit your In App Purchases for review since they are in the state Developer Action Required. For each IAP product submitted, please be sure to edit the detail information or cancel the request to change the detail information for the In App Purchases using iTunes Connect.
For more information on how to implement In App Purchase in your application, please refer to the In-App Purchase Programming Guide.
You can learn more about submitting In App Purchases for review in the In-App Purchase Configuration Guide for iTunes Connect.