So I did a live chat with customer service who said the network needed to be Time Warner's Road Runner, even though their FAQ said it didn't matter what wireless network was used. I have Verizon Internet. After getting cut off and getting a new chat rep after being 18th in the queue I was told they could install a Road Runner Internet gateway (not free to install, no charge after that). But why would I want a second wireless network (which might interfere with the other one, for all I know) just to occasionally watch TV on a small iPad in the other room? Oh well. I deleted the app and sent a Contact Us form saying they needed to change their FAQ.
It might be just as well. Reviews in the app store were not favorable.