Hello, Natara here.
During our server maintenance, a server error occurred for a short time.
So some users who tried to access the game during this time may have seen a pop-up message saying that,
"There are records of your information in another device's gameplay."
We apologize for causing confusion and worry from seeing this message.
The following problem was temporary and the wrong message was sent.
In reality, your account information has not been affected so please do not worry.
Once again, we apologize for causing you confusion and worry due to the wrong message.
We will do our best to ensure this won't happen again in the future.