u/Life-Butterscotch535

Hi everyone, I need some advice on my case. I am currently in the F2A category (as an unmarried daughter under 21), but I will turn 22 this August. I had my interview a week ago. After the interview, the officer approved my I-130. I also confirmed with her that I was still considered F2A, and she said yes. However, I just received my I-130 approval letter, and the visa section listed is F2B. I am very confused by this. My CSPA age is still under 21, and my Priority Date (PD) is already current. Do I need to draft a CSPA explanation and submit it as unsolicited evidence through my online USCIS account to request a category correction? Thank you.I checked with emma and she said processed in NBC. Could you guys explain why it sent to NBC?