2FA is very easy to use. You start by logging in as usual. You will be presented with an additional login screen if your credentials (username/email and password) are correct. Open the Authentication app from your phone/device and type the 6-digit code generated and displayed by the Authentication app into your browser. If the code is correct, you will be logged into your ICONOMI account.
Please note: You will need 2FA enabled in order to make withdrawals from your account as you will be required to confirm your transaction with 2FA as well as by email confirmation.