If you haven’t had a chance to look through this link I suggest you read it.
Smartphone only (Android or iOS)
5 Sky Sports channels: Premier League, NFL, Arena, Racing & News
No, you can only watch your Sky Sports Mobile Month Pass on your smartphone. If you want a slice of the sporting action on your big screen, you'll need to grab yourself a Sky Sports Day or Month Pass.
No, you can only watch the Sky Sports Mobile Month Pass on a supported Android or iOS smartphone. To use the NOW TV app on a tablet, you'll need to have a Sky Sports Day or Month Pass
FYI that I do not work for NOW, just a NOW customer trying to help