Individual enrollment blocked on address, US, no response to case 103014061766

Hi everyone,

I'm trying to enroll in the Apple Developer Program as an individual in the United States, and I'm blocked at the address step.

•	What happens: "This address isn't valid." error appears.
•	Where I see it: Apple Dev Website.
•	Support case: 103014061766, opened October 30. I've only received the automatic "we received your request" email.
•	What I've tried: re-entered the address in USPS format, checked the address on my Apple Account, verified my US phone number as a trusted number.
•	Account details: US region, two-factor, and a US phone number.

I recently turned 18 and this is my first developer account. I'm building an iOS app and need the account to start TestFlight testing.