You need to check the service configuration, because as the error says the application can't communicate with the server. There are three causes for that error:
- Your username and password combination is wrong.
- The firewall installed in your computer is blocking the application to communicate with Internet (server).
- The server address and its additional parameters are not configured properly in the settings menu.
Try to check all these and get the resolution for each one of the cause because one of them is the solution to your problem.