Well, my order finally went through, but to make up for the last time, I see it went through twice!
The tip about entering the post code for suburb was spot on, thanks whoever that was.
Yeah that didn't work for me. I think it was just up to luck whether you could connect to their backend address database.
I would LOVE to know how many connections they had. I don't think they had this issue with PS5 but the system would have still been the same.