synchronization

good evening.
downloaded and installed the application on the tablet.
added a new currency to my account.
now I have two currencies.
downloaded and installed the application on the phone.
clicked import account.
introduced a secret key of many words.
came up with a new password.
there is only one currency in the account.
As I understand it, a new account was created.
how to create one shared account on two devices?
technology is not reliable these days.
I’m afraid of losing money.