AP Request for Additional Evidence. why?

I applied for Advance Parole 2 months ago, today i got an email saying that they mailed me a request for additional evidence.
this is what I sent:
- Proof of my DACA
- ID
- A letter form a doctor with my grandmas diagnosis (translated and notarized)
- A letter explaining why I need to go see my grandma (she raised me as a kid)
- Form I-131 completed
-2 passport photos
-Payment (money order)

One thing I did not send was my birth certificate. Anyone has a clue if I missed anything? TIA

i forgot to include my birth certificate 2 years ago when i applied to go visit my dad.I translated my birth certificate and mailed it . after 2 weeks i received my travel Document . They just need proof that you related to your grandma

Really? so that might be it, Thanks soo much.

I think they likely need your Birth Certificate. I sent mine and my dad's to show my relationship to my grandma. Good luck!

Thanks!!!! BTW my birth certificate has my parents and grand parents info so i don't think i have to send my dads birth certificate only mine.

What are your timelines?

They received mine on May 11th. I already purchased my tickets for July 7th.

This is my second AP application... If anyone has received an AP recently, please let me know how long it took for you guys to get approved.

My case was accepted on April 15. and just 2 day ago they sent an email requiting more evidence.

they received mine june 1st . This will be my 2nd application i applied for a year with multiple entries .
I hope that i can receive the document by july 5th but i highly doubt it will happen . i cant even check the status online yet .

Seems like Most application take a month and a few days.

As others said, you might have to establish relation to said grandmother (your birth certificate, and birth certificate of the parent linking you to said grandmother, w/ translation if not in English).

What was your timeline like the first time you applied?