Two points from the T&Cs particularly worth noting
Cancellation of subscriptions must be made in writing (by letter/email) at least two weeks before the next payment due date. Cancellations will not take effect before the end of any minimum sign-up period.
All paid subscriptions (excluding pay-as-you-go) will renew automatically (unless cancelled, see above) to ensure you continue to receive the benefits of the ever-increasing range of genealogy data.