"View my payment information.

No I haven’t received any payments"

If you need to contact eBay , using this link, click on Contact  Us at the bottom of the page.

You'll see the automated assistant at the right, ask to speak to a supervisor

https://www.ebay.com.au/help/selling/selling-tools/seller-hub/using-payments-tab-seller-hub?id=4798

Although you've changed your registration  location to Australia, I don't think you can change managed payments from one country to another  because of the different verification requirements in other countries. I  may be wrong and  someone else may know for certain.

eBay may say you'll need to open another eBay  account in Australia  so then you'll need to register to sell and sign up for managed payments in Australia

https://www.ebay.com.au/help/selling/getting-paid/registering-seller?id=4792&srsltid=AfmBOorMVey7jD3...

It would  be a good idea to end your current listings until everything's sorted.

Let us know how you go as it may help others in your situation.