Hello there, @accounts666. You can reach out to our Live Support Team for a closer look at your account. They can help you out through screen sharing, so we can safely check your account and figure out the issue with connecting your ANZ bank account to QuickBooks Online.
To reach out to them, click the Help button in the top-right corner of your QuickBooks Online screen. Then, click on the Assistant tab and type Contact Us and follow the prompts.
Should you have further questions, you can always get back to this thread.