I did reach out to DJI support and they claim they are unable to provide after-sale services in the USA so looks like I will have to send the drone back to my Korean seller and they would have to initiate service with DJI South Korea:
Hello all, so I have purchased a brand new Mavic 4 Pro from eBay from a Korean seller, drone arrived this morning, in brand new, sealed package. No damage to it. I unpacked it fired the drone up, registered it under my DJI account but when I...