Google thinks my account is American for Play Store geo limiting purposes, and if I recall correctly would only let me update it by adding a payment card, which I refuse to do. I don’t know where they even got that idea—they should have known full well I was Australian. My best guess is that for a few years I used a phone I bought while visiting America. But it was neither my first phone nor my most recent, and the account was at least five years old before I even visited the US.