Thank you for your responses!
1. Due to DC being younger than 13yo, paper registration was sent in the first week of May. (Wished parents could set up online acconts for these younger kids!) By the time we received the returned registration, the regular registration deadline has passed. We sent in another paper registration with the late fee. Still waiting.
2. One odd aspect of our multiple communication with the College Board is no one was able to locate DC's application, even after we gave the barcode on his returned application/check. It was odd that there was no record at all in the system.
3. Thank you for the suggestion of talent searches. It might be worth trying.
4. We will also try to give College Board a call again and see if someone would push the application through this time.
Thanks again!
