PFTQG  This application does not interact with WIFI at all - if you had problems with your Wifi connection while CheetahWatch is on your system, then your problems are unrelated - do you have firewall software installed that might be getting confused? I have had no reports of it interfering with internet traffic. How are you establishing your connection? Feel free to contact me via email.

As to displaying data - it relies on the modem providing this information. Some versions of either the firmware on the modem or the Mac OS X driver do not provide this information, or do not provide it in the expected way.   
(Version 1.1)