This error can occur for several reasons.

Wrong password

Caps Lock, selecting the incorrect language, a misprint.

In order to avoid possible mistakes, try to copy the password from the letter, received after the registration and not enter the password manually.

You can change the password to the desired later right in the terminal.

Invalid combination of username-password

If you have other accounts in our company, be sure that you have chosen the relevant.

Entering the password to the account (trading account and personal cabinet passwords are different).

Wrong choice of the server

When authorizing in the terminal for trading on a real account select Exness-Real for MetaTrader 4 and MetaTrader 5.