@LazenbyPhotography - Was the "message" with the QR code an Etsy message or email? You said "another message" but Etsy orders don't come via messages. My apologies if you use "message" and "email" interchangeably; to me they're completely different things.
Is there really an order in your Orders queue? If yes, is there $$ in your Etsy payment account? If there's $$ there (and especially if the order isn't over $250), I'd go ahead and ship the order.
If the order is from a country which is notorious for scams (not that they can't happen anywhere, but they seem to be more prevalent in certain countries), I might think twice ... but unless someone else posts a compelling reason to cancel the order, I'd go ahead and ship it.
You've had 48 sales (or 47 before this one if it's legit), so you're not quite new ... but if you haven't taken time to learn how you receive Etsy orders and how you get paid, etc., you might want to read up (or at least ask questions) about how that works on Etsy.
