If you are sharing data either by using your own Raspberry Pi built receiver or FR24 provided, you are entitled to a complimentary Business subscription for as long as you continue to share data.
If you are about to start sharing data and currently own a paid Flightradar24 subscription, please make sure to cancel it - otherwise you will get charged continuously and the free Business subscription will not get activated automatically.
The paid subscription does not get cancelled automatically when you start sharing data - the cancellation has to be done manually on the platform you have purchased the subscription on.
>>> If you already have an account, it will automatically be upgraded to Business as soon as we start receiving data from your feed.
>>> If you don't have an account yet, simply sign up for a Basic account and do not start any paid trials: https://www.flightradar24.com/premium/signup
As soon as you start feeding data the created Basic account will get upgraded to Business automatically. You may need to log out and in again in case Business is not visible after the feed start.