So what monthly pass did you purchase, was it the mobile pass at £5.99?
If it was you only get access to 5 channels
Sky Sports Mobile Month Pass includes Sky Sports Premier League, Action, Arena, Racing and News
As for the day pass, it is highly likely that the mobile pass has taken priority if you are watching on your mobile. The day pass would kick in if you started to watch it on another device.
That being said if you only ever intended to watch on your mobile then you are best to get the full month pass and not just the mobile one.