Previous Login Too Recent
You attempted to log in with a nation that already logged in successfully a few seconds earlier. This may mean that you are attempting to maintain a connection via password or autologin rather than supplying a PIN.
Error: 409 Conflict
The API is not clear as to how parameters are supposed to be passed to the server either. From personal observation, it has to be through a POST request as opposed to GET, but it is not clearly stated in the documentation.