The night before last the Now TV app was working fine when casting from my iPad but, last night, it simply would not cast although it would run on the iPad itself. There was no error message and the iPad would cast all other apps such as YouTube and iPlayer. This has happened before and is very annoying. I am using a TP Link wi-fi extender casting to a Samsung smart TV. (P.S. I have another old TV/Chromecast in a room with the router which works OK with Now TV). Most grateful for any help.