What about order/License validation?

Hi all,
Just approved. Thank you.
As an author, we need to know who we are talking to, if a user has purchased an item or check for a customer/license validity.
I read in this forum you were working on the subject 6 months ago.
https://www.codester.com/forum/topic/770/codester-api-with-permissions
Any news?

By the way, cannot save changes of an item for the fields below. They are like off.
- Software framework
- Database
- HTML/CSS Framework
- JavaScript Framework

All the best