Hello, Hero Candidates!
Thank you for playing the Devil Book.
The method to use the Coupon depends on the OS version.
- To use the Coupon, Please follow the route : Main Screen - Menu Icon - Option(Cog Icon) - Coupon Use
- In case of the IOS device, Coupon can't be used because of the Apple Policy.
- To use the Coupon, we suggest that you use the Emulator or AOS device and then refer to the AOS method above.
- Please refer to the URL to play the Devil Book with your IOS account on Emulator or AOS device
For additional inquiries, please email at email@example.com