Sellers (which is who you should be contacting) don't have access to real email addresses. We get artificial bot-generated addresses.
If you are waiting for eBay to send you an email to your 'new' email have you changed it in your personal settings?
What confirmation are you waiting for? Once you pay your order is confirmed. The seller should upload tracking, if they post that way, when they post.
Also note that it is a long weekend and most Australians have better things to do than sit on their devices.
