Elias here with Shopify Support. Thank you for reaching out.
Looking at your screenshots, it does look like your shipping rates and settings are setup correctly for Australia. However, it is possible that you may have additional shipping profiles containing some of your products, so you'll also want to double-check if you've included your shipping rates in the other shipping profiles.
If you're unable to identify the issue, then it looks like we’ll need to access your account in order to resolve this issue. While we’re not able to provide account-specific support via the Shopify Community at this time, our Support team would be happy to continue assisting you through live chat, email, or callback. To get in touch with our Support team, please visit the Shopify Help Center and log in to your account.
I'd love to know if our Support team can help you identify and resolve this issue. Let me know!