How can envato and we can protect our item from illegal sell? - Envato Forums
Verify Your Envato Clients using Purchase code [Free PHP Script]
Purchase Code is Invalid or was Previously Used. How to Fix the Problem
GitHub - JosephGabito/envato-purchase-code-verifier: 🚂 A nifty tool for Envato Authors needing to create purchase code verifier as easy and as fast as possible.
Verify Your Envato Clients using Purchase code [Free PHP Script]
Where Is My Purchase Code? – Envato Market Support | Help Center
How to get my Envato purchase code? Knowledge Base - ThimPress