I have purchased the “Course Builder” theme from Thimpress on June 9th, 2018 and have the transaction statement from Paypal which was my payment method. I am working on a local version of the site now and trying to re-build the website fresh. In the process of re-activating all plugins and the Course Builder theme, I get prompted to validate the purchase by signing into my Envato account. Once there I see many other purchases dating all the way back to 2013 but nothing for Course Builder! What can be done to register my purchase to my Envato account or get Thimpress to allow the theme to be activated?
My opinion is getting touch with Envato customer success They would like to assist you with an official answer.