I think you should just HUCA. I've read on reddit, people calling multiple times before they got a supervisor which sent then a link that accepts passports. (Also have to upload while on the supervisor is still on the phone)
There is also DP of people being approved after uploading their Canadian driver license. So you can try uploading an Aust driver license if everything else fails.
Use https://churning.io/ to search datapoints from other people. the subreddit churningcanada is the one where Canadians are trying to apply for US credit cards (similar to us in Aust)
