Entering the router's IP address makes no sense.
The SoftPerfect Bandwidth Manager software consists of two major components: a core service that processes network traffic and enforces bandwidth restrictions and a user interface (GUI) used for configuration and monitoring. When you launch the SoftPerfect Bandwidth Manager GUI it asks you for a host name, where the service is running, and a password. By default, the host name is localhost and the password is blank.
If you have installed the bandwidth manager service on another computer, enter its IP address or name to access it. If you are using Windows XP SP2 or above with the built-in firewall enabled, please set it up to allow the bandwidth manager connection (TCP port 8701).