To follow up on the shipping issues due to the Covid - 19 lockdown in Australia, I have turned off the shipping via USPS. If you are an Australian customer, and receive a shipping error, please contact me at firstname.lastname@example.org so I can find an appropriate shipping method for you. With a little bit of extra work we can get past this!
I have been checking weekly to see if the mail has started back up for Australia. when i can, I will have the shipping options for USPS back up!