Your subscription will automatically renew for additional term(s) at the frequency selected when purchasing membership: one (1) month, four (4) months or 12 months/annually. Notice of renewal is stated when selecting membership (see below) and in the Terms and Conditions at checkout.
Your renewal date can be found int he Billing section of your account Profile page.
Renewal continues until you cancel the membership. For more information on cancellation policies, see the following article: Membership Cancelation and Refunds