How to add a product I purchased as a guest to my account so the product license is on my account?

I purchased the Go Pricing Tables on the Envato Market and when I went to download some demos, I needed my Envato account in order to verify my purchase. However I am working for someone and they bought it and checked out as a guest, therefore the purchase and order information is not on my account.

If a file was bought as a guest then to access downloads etc the buyer will need to create an account

Access to downloads etc. will only ever be available to the purchasing account and can’t be applied or transferred to another.