How to change shipping from USPS to Australia Post?

[scottitmade]

Buyer just paid for an item I had listed.  When I listed the item, postage options were listed as Australia Post, or Buyer arranges postage/delivery.  

When I go to print postage labels, I am limited to USPS (United States Postal Service)! Both the buyer and I are in Australia, so I don't understand how this happened.  Regardless of that, as the seller, I need to print a postage label that will be Australia Post, but it seems the only thing I am able to change is my 'Ship From' address, and make it an American one.

To add to all that - ebay has directed me to you all here in what must be a top notch community, as options to contact them directly are not available.

Has anyone experienced this situation or know how to rectify it?

Regards,

Scott