Subscriptions will not be automatically extended, it should be done manually via the Dashboard. When the subscription expires you will be returned to the plan you had before: Basic or PRO/Ultimate subscription.
Additionally, if you do extend your plan before it ends (30 days left or less), you will receive an additional month of your current plan. It does work with the in-application purchases and purchasing directly from our website, then adding the code manually through our application dashboard.
However, please note that due to the additional taxes in AppStore, Google Play Store, and AppGallery, the prices are higher.