The game is divided into Android/iOS systems. It cannot be used if the system is different. Please check what system you are using before purchasing. If you log in to the wrong system, the account resources will be cleared and the merchant is not responsible
1. The account has been bound to the Konami ID
2. The account region is random
3. The account has only passed the novice tutorial
4. To change the account password and rebind, you need to go to the Konami official website to change it. 
5.Do not delete your account. You cannot bind it to a Konami account again after deletion.