Honestly, we would not go with Lifetime because we won't know how long the extension is available, it is only only depend on us but also depends on Joomla and how many users still use Joomla (for example, in the next 10 years, we could not guess)
And what if we take lifetime license and then disappear or do not develop the extension further (we know that it happened with some companies in the past)
So we will stay with yearly license for now. If you want a longer duration (for example, 5 years license), please submit a support ticket and we will discuss further
Regards,
Tuan
