I've installed the application to see what's status of ports, but it doesn't appear to offer the possibility to configure ports. You can only select server name, password, and organization. There is no port available, but I tend to believe this is a problem with firewalls. If you have a firewall installed, go to the exclusion list and then add it there, then restart the software and use it normally. If I am right, it should work straight away without any other errors.