Who says that the ISP is what determines what server you use? That could be a factor but so would be login ID, general geography, availability, a cookie (cookies are used for apps as well as safari, though clearing them probably requires removing the app and reinstalling). Since you are using an iDevice, that stuff is pretty well masked from the user. Something is making some devices/users lose TCM SD on their iDevice and others not. Not sure we will figure out what it is. BTW, just tried it on directv.com and when I hide SD duplicates, TCM disappears.