“Once the parent places the order, they can leave a comment on the order or forward their email confirmation receipt over to [email protected] to ask for temporary access to the Online version of the textbook while it ships. They just need to make sure to tell us what AoPS Online username to assign the online book to temporarily. Note that this request needs to come from the email that was used to place the order for proof of association. ”

这是他们的email节选。