If you have the IP address, username and password set correctly then it should simply burst into life! If it doesn’t then the most likely issue is that CI-V Transceive is disabled in the rig. This is required for wfview to work.
To check this, Menu, Set, Connectors, CI-V, CI-V transceive. Set to ON.
You can check the wfview.log file which is located in your system default temporary directory, you can access this with the variable %TEMP% or it is usually c:\users<username>\appdata\local\temp
I have set the 9700 to work using both the USB & Lan system. CI-V Transceive must be set to on. For Lan connection you need to set a username and password into the 9700 and also set network control to on, it's off by default. Also enter the ip address shown on 9700. Then all will be well.