I recently bought 13,000 power through the iPhone, Apple confirmed the purchase but the credits did not increase in my Blynk account. According to Apple Support I followed the steps outlined in the article below to restore purchase within the app:
https://support.apple.com/en/HT204530
But I did not succeed.
Apple has recommended direct contact with Blynk. Here are the purchase information:
Lang_Country: pt_br
User Storefront: Brazil
Concern Type: iTunes Download Issue
Content Title: Pack of 13,000 Energy
Provider Name: Blynk Inc
Track IDs: []
Purchase Date: 2018-04-16 17:58:34 Etc / GMT
Purchase Device: iPhone
Comments: The item has not yet been downloaded in the application.
Thank you.