Hello, Hero Candidates!
To confirm the Link Information, please follow the route below.
Route : Main Sreen - Menu Icon - Option(Cog Icon) - Link Information
Just in case, please save this Link information through write down the information or take a Screenshot.
This information can be used when you lost your account or you want to play your Devil book account on another device.
For additional inquiries, please email at firstname.lastname@example.org