US Immigration from Guinea

My mother (who is a part of my household and a dependent on my tax return) petionned for two of my siblings living overseas. Our family size is 6 + the 2 intended immigrants (8 people total). She is filling (2) I-864 (with $0 income) being the petionner, and I am filling an I-864A with 65k (more than enough for 8 people). My question is how do we do the count to reflect a family size of 8 on her I-864. So far I can only come up with 3. There is no family member count on the I 864A.

Family members: My mother, Me, my wife and 3 children.

Thank you & your help is greatly appreciated.

Immigration kept my husband's original documents when he first arrived in the US at JFK. We recently filled out a G884 to get the marriage certificate back as that will be needed for his citizenship interview, if I understand correctly. However, USCIS sent us back the certified copy of our marriage certificate, not the original. What is my recourse? The USCIS website has not been helpful and the menu options when I've called have dizzying. How can I get through to a representative there? Thank you!

I'm asking this for a family member. She had her ceremony early last month, and applied for the passport at USPS a few days after. They sent back the certificate (Thank God) about 2 weeks after, but the passport was never received. After waiting for a week, thinking they were still processing, she called the DHS passport office. They claimed to have delivered the passport 2 weeks ago (a few days before the certificate). They gave her a USPS tracking number which showed that the passport was delivered. But it was never received. I know that there is a form to file to report a passport lost in the mail, and they can replace it, but I was wondering if anyone had come across anything like this? We're going to USPS to inquire about the package tomorrow. If they claim it was delivered and there is nothing they can do, what else could we try? Unfortunately she lives in an apartment complex where there are 100+ mailboxes adjacent to each other, and the mailboxes don't indicate house numbers. Hence asking neighbors is not an option.

This may seem like a silly question, but.... I had my swear-in oath exactly 2 weeks ago, but my status on (https://egov.uscis.gov/casestatus/landing.do) was still at "We mailed your oath letter" for almost 2 weeks. It's not until today that my status changed to: "On September 6, 2018, we issued your Certificate of Naturalization for your Form N-400, Application for Naturalization, ". But the date given (Sept. 6th, e.g. today's date) doesn't seem right. My certificate was clearly issued on the day of my oath ceremony.

For those of you who recently naturalized, is there also a difference between the date they gave on the page, and your oath ceremony date? Thank you.