If you are a Netia broadband subscriber, your credentials for Fon are the ones you set up during the router's registration.
Should you have forgotten your password, you can reset it clicking here.
Connecting abroad (outside Poland)
To connect outside Poland, add #netia to your username to create your roaming username, e.g. email@example.com#netia. Start a session with your roaming username and your normal password.
For more information about how to connect, please click here.