Each click of the download button counts as one download against your monthly download limit. This includes the individual download page and your account downloads section. You can download the same file multiple times if necessary but it will count against your limit.
If you are an Unlimited Access subscriber and unintentionally downloaded the same file multiple times (if the download was being slow or timed out for example) then email firstname.lastname@example.org and we will reset your download limit.
Royalty Free Downloads do not count towards your monthly download limit, you can download these files multiple times after purchasing them.