Its really silly. You have to go to entertainment in the drop down menu (top left). Then tv guide -top right - then scroll all the way down to 'watch live'. I missed the start of it so I'm gonna wait.
Little bit ###### off nowtv that you had a link on the home page saying 'watch game of thrones live' which did not let me watch it.
Guys, it is actually on there.
If you go on Now TV either on your phone or google, click on Entairtainment and then you will see many options on the right eg Go to Box, Hot Right now etc. Scrol up and the last option on there is WATCH LIVE. Click on that and GOT is there.