There are many things you should consider before transferring an account, and the most important ones are explained here:
- Make sure there is enough storage space left on your device before you use the code. Otherwise, the install won’t work, and the account will get lost.  In this case, we won't be able to recover the account and your only chance would be trying to recover it with the help of Bandai Namco Entertainment. But maybe we can come to an agreement. However, we have to say that it is stated in every product description that you should have at least 5 GB of storage space left on your device.
- It should be ensured that there is a good internet connection during the download of the files. Nevertheless, there is a possibility that you will face a 'Download Failed'.  If this happens, try to download again, maybe with a different connection, till 'Download Complete' is shown on your screen. Do not empty the cache during this process, otherwise you can lose your account.
- Please make sure that you only use Android codes on an Android device and iOS codes on an iOS device, otherwise your Dragon Stones will get lost!