All logged data is stored while the subscription is active.
Once a subscription is no longer active the account and data will be deleted one year past the subscriptions non renewal date.
The account deletion date can be found in the settings->account->subscription section within TeslaFi.com for accounts that no longer have an active subscription. An email will be sent prior to an account deletion.
All data can be downloaded from settings->account->advanced at any time.
Customer support service by UserEcho