If you travel a lot, EU version is the way to go.
If that doesn't help, we recommend that you reset your password to a new one and write it down in a safe place. If you have multiple accounts, make sure you are using the correct login (email) and password pair to log in. Check the correctness of the pair, typos of the login (email) and password. The error indicates that login (email) or password was incorrect. Therefore, not all error codes relate to the operation of the launcher itself. Launcher - a program separate from the game, which is the link in providing access to the game.