You can change your subscription period (monthly, annual or forever) in the subscription settings in your profile or on the subscriptions page. Important: If you switch to a new subscription period while your current subscription is still active, your new subscription period will start when your current one expires.

If you subscribed using the web portal, you won't be able to automatically transfer to a different subscription period. You can cancel your current subscription, wait until the paid period has expired (SAU will send an email about it) and then subscribe for a new period. Full instructions on cancelling a subscription can be found in the article "Cancellation options".