The app - downloaded from the Windows 10 Store on my laptop - doesn't work anymore. Everytime I try to watch a programme it prompts me to sign in and when I try to the message that comes up is "Something's not right, give it a moment or check nowtv.c...
I'm having the exact same problem as well I've had to resort to watch from the Now TV Player, provided by Now TV themselves, but it is a big inconvenience. Perhaps it is a problem on Windows end?