To charge you again, as it is all a subscription, they would have to set up a new subscription, no? Anyway as they email me each month to say they have robbed my bank account for approx £8, I'll wait until next week when my statement is emailed to me to check. Maybe I'm too trusting but the terms of the subscrition and the advertising were pretty clear that it included upgrades as long as I keep paying and previous experience bears that out.