Does Open Banking work if I live overseas?

Yes. The connection is between August and your UK bank account, made through the FCA-regulated Open Banking framework, so it works the same however far away you are when you set it up. You approve the connection from your own banking app, it's read-only, and August never holds your credentials or moves money. Once connected, every rent payment is matched to the right tenancy as it lands, and you see the result in August on mobile or web from any country, in any time zone.