Don't call the police yet... there's a high probability that it is not a case of stolen identity!
What could have happened: You are already logged in from another browser page on the same computer. Or you are also logged in on another computer. You may be a superb efficient multi-tasker but iconnect360 only allows a single login at any one time. This means you should not be opening multiple sessions of iconnect360 using the same user account. Doing so may cause data conflict issues.
What should you do: Log out from all your iconnect360 sessions. If you have multiple computers, you better check them all. To play it safe, ensure that all your internet browsers are closed. Then open a new browser session and log in to iconnect360 again.
What you may also want to do: If you really really really need mutliple sessions opened simultaneously, then create multiple user accounts for yourself. You may want to create a view-only user account to view information on iconnect360 and use another higher access rights user account to execute actions or tasks.
What could have happened: You did not properly log out from your last iconnect360 session. This may have happened due to unexpected system shutdown, such as electrical blackout or your computer rebooted while you were still running an active iconnect360 session. Or you simply forgot to log out (it does happen).
What should you do: Close all your browsers, wait two minutes and then log in again. If the login error still appears, clear your internet browser cache, close your browser and then log in again.
What you may also want to do: Log out.