To get your Purchase Code for a theme:

  1. Log into your Envato Market account.
  2. Hover the mouse over your username at the top of the screen.
  3. Click ‘Downloads’ from the drop down menu.


  4. Scroll down the page and find the theme.
  5. Click on the 'Download' button next to the theme name.
  6. Click on ‘License certificate & purchase code (PDF)' in the drop down menu.
     
  7. The browser will begin downloading a PDF file. Once downloaded, open the PDF where you will find the purchase code.


Source: https://help.market.envato.com/hc/en-us/articles/202822600-Where-Is-My-Purchase-Code-