No worries, Just ask your agent to send email ASAP and certify your copies by email.
Certified copies
For the purposes of this application any one of the following persons can certify in writing that a document is a true copy of the original document.
In Australia:
● a Justice of the Peace; or
● a Commissioner for Declarations
● a person before whom a statutory declaration may be made under the Statutory Declarations Act 1959 (for example a nurse, legal practitioner, medical practitioner, pharmacist or dentist)
● a registered migration agent (whose registration is not suspended or subject to a caution).