I had this problem and spent 80 minutes talking to BT and got nowhere. The answer to the the " watch now " problem on the ipad is to go into settings on the ipad and change the clock to 24 hour option then go back to BT sports via the app and it should work.
Downloaded latest update to the App, it now closes when I press to "watch live" button. I had the problem in the previous version of "no events" showing when going to the Watch Live screen. This was not resolved by changing the time settings, ironically the latest version of the App states that it has resolved this (non) problem, any suggestions?.