Cannot complete Meta for Developers registration - SMS code never arrives (South Korea, +82)

Hello,

I am trying to register as a developer on Meta for Developers to connect the Instagram API to my online store (CYIPLE, https://cyiple.com).

At the phone verification step, the page says the code was sent, but no SMS ever arrives.

- Country: South Korea (+82)

- Phone number: already verified in my Accounts Center (Korean mobile number)

- My carrier has turned off international SMS blocking

- MMS is enabled, spam/junk folders checked

- Tried with and without the leading 0, and waited 24+ hours between attempts

- This has been happening for several months

The "Update phone number" button is greyed out because the number is already saved on my account, so I cannot move forward.

Could a Meta staff member please verify my developer account manually or provide another verification method? I can share the phone number privately.

Thank you.