Product validation is the process by which a user confirms their purchase of our theme via ThemeForest. Validating your purchase of the theme allows us to ensure a couple things:

Registration
We continually strive to provide a superior level of support to all of our customers. Product validation requires registration in the member center, which gives us the opportunity to assist new users if needed via the Knowledge Base, forums, and other resources.

Legitimacy 
As outlined in ThemeForest’s 
standard license and our terms, it helps us know that you have purchased a license of our theme to use for one website (i.e. one domain).