Your Cozy will send you a similar message for each connection whose characteristics are different from previous connections.
For example if you connect from another place, with another browser…
Anything that might lead him to suspect that the login might not be your doing, but someone stealing your password.
If the time indicated in the message corresponds to a time when you actually connected to your Cozy, there is no need to worry, you can ignore this message.
Otherwise, if you do not recognize this connection, simply click on the blue button in the message to access the settings screen of your Cozy where you can change the password you use to log in . connect.