Why is the wrong currency displaying for different locations on my website?

[Cozytown]

I just noticed that when United States is selected on my website as the customer's location, it applied the currency AUD. It's not the only one that's incorrect either, I had a quick look through and countries like Angola and Argentina have also had AUD applied. Is there a way to fix this?

I'm using the Dawn theme, store link is www.cozytown.store, and my location is Australia which I assume has something to do with the currency defaulting to AUD for some locations