When you make a purchase from the Stardock store, you'll have the option to log in (if you already have an account), create an account or check out as a guest (no account is created). In any case, you will receive an email with instructions on how to download your products and keys.
Below will detail the methods to use for getting your products and keys at a later date depending on how you purchased (account or guest checkout).
Error rendering macro 'excerpt-include' : No link could be created for 'SER:Software Excerpt Repository'.