When you buy a new module, the license is valid one year (you can update the modules to the last version within one year).
After this period, you can renew the license which will be valid until the anniversary date of the module purchase (1). If the license has not been renewed for 6 months, you will have to buy a new license.
Choose if you want to renew your licenses once or if you prefer an automatic annual renewal (you can stop it whenever you want):
(1) Example: if you buy a module on 06/23/2020 and renew the license late, for example 07/18/2021, your license will be valid until 06/23/2022.
To know the anniversary date of your licenses, please refer to the last invoice (we can send you it back to you on request).