Licenses purchased before Dec 7, 2020 were not lifetime licenses.
They were licenses available permanently with an annual maintenance fee to keep receiving updates and maintenance. As of Dec 7, 2020, these licenses are no longer sold. Owners of a previous license can upgrade to a lifetime license at a discounted price or switch to a subscription license to keep receiving updates.
All lifetime licenses purchased after Dec 7, 2020 give access to unlimited updates and support. There is no annual maintenance and updates fee.