All LogTen Pro subscriptions are annual and default to auto-renewing. See How Do I Manage My Auto-Renewing Subscription for details on changing your subscription, or ensuring that auto-renewing is enabled. It is not possible to purchase a longer period subscription.
If you have a, previously sold, non-renewing subscription ( 3 year LTPX Gold), you will receive reminders when your subscription is about to expire. Seven days before your current subscription expires, you'll be able to select a new annual subscription from within the Store tab in LogTen Pro .