Is your account real or demo? Because, you have to suppress PIN code verification for your live accounts, otherwise, the authentication fails.
On how to do this, please follow this link: https://www.dukascopy.com/wiki/en/forex-cfds/jforex/practices

Suppress PIN code verification for LIVE accounts
It is possible to disable PIN code verification upon login.
You require a static IP address (contact your internet service provider).
To register the IP address:
  • Login into your live trading platform.
  • Open the My Account report (Go to Account > My Account).
  • In Security Settings, click on IP registration and register your IP address.


Last edited by kvm; 08/30/19 12:00.