You can manage your subscription, by logging into your account here and clicking the "Manage Subscriptions" tab from the top left-hand menu.
You can manage your delivery schedule and individual subscriptions, as well as update your billing information and view your purchase history.
You can also reactivate cancelled subscriptions if you wish to.
If you have forgotten your password, please use the "Forgotten password" link on the account login page and follow the instructions.
If you do not have an account, you can request an account creation invite by clicking here and following the instructions.