Quick update: I originally received my EAD with a wrong DOB on Jan. 1o and went to apply for a SS, but it didn't went through because of the wrong DOB. I sent everything USCIS asked for on Jan. 16 and received a confirmation that they got it on Feb 4. As of today, I haven't heard anything back from them, but today I got a letter from the SS office saying that I apply for a card on Jan. 10, and that I should be receiving my SS card in about two weeks. Hopefully that's a sign that my EAD is about to come too! fingers cross!!!