To find your trial end date, next billing date, update your payment method or cancel a subscription purchased through Roku, log in to your Roku account at my.roku.com. Click 'Manage your subscriptions' and choose HISTORY Vault to view, edit or update your subscription.
If do not see an active HISTORY Vault subscription in your Roku account, you may have subscribed on a different platform. You can find instructions for looking up your subscription information here: I'm not sure where I originally subscribed to HISTORY Vault. How do I find that?