You need to register your account(email,password) to enable you to transfer your existing data to your new device.
Login to your new device using the same login information.
If you already have registered your account on your old device, you do not need to register your account again. Just login on your new device.
If you have not set up an account, register your account on your "old" device first.
Then your data will be able to be sent to your new device.
If you have any questions, please send an email using 'contact us form' in the app.