How Do I make WordPress theme activation function with buyer purchase code using Envato API?

[SmartSoftFirm]

How Do I make WordPress theme activation function with buyer purchase code using Envato API?

I’ve already made a token and my WordPress theme. but, I can’t understand how it works.
I’ve read some resources in Envato forums. but can anyone help you to give more clear details?

I just make an input in my theme option for the user to submit his purchase code. after the submitted purchase code how it will be verified in Envato API?

[ki-themes]

How to verify a purchase code using the Envato API

This is a community guide for authors who want to implement purchase code verification on their items, websites, and applications. If you have any questions or feedback then please feel free to respond directly to this topic.  This topic is a wiki. All active members of the forums can edit it. Don’t hesitate to make corrections or add in any new information. All contributions are welcome! Just want some working code to get started quickly? There are some functi…