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Error: The address entered appears to be invalid. Please correct your address and resubmit.
I'm in Korea, and had this exact issue when entering my romanized address.
First click "Invalid address", second click "Invalid address", third click... accepted.
It's like 1: "are you sure?", 2: "are you really sure?", 3: "OK, OK, if you insist!" 🤦♂️