Hello, Hero Candidates!
Thank you for playing the Devil Book.
To confirm your purchase record, please refer to the contents below.
In case of the Google, you can check the purchase record on Google Play.
Google Play URL : https://pay.google.com/gp/w/u/0/home/signup?sctid=5762381370054319
In case of the Apple, you can check the purchase record on App Store through the method below.
1. Enter the 'Setting' and tap 'your Apple account' on your device
2. Follow the route : 'Media & Purchases' → 'View account' → Purchase History.
For additional inquiries, please email at email@example.com