US Immigration from Angola

I'm currently a holder of a permanent resident Visa under category E21 and I want to bring my family from Russia. I would please like to know what the requirements necessary to bring them to the United States. To remind that I m a self petitioner.

I recently got a RFE for the beneficiary s birth certificate that was not included initially due to our lawyers error. The RFE stated that his birth certificate needs to be translated into English, and upon reviewing it, it doesn t contain any of the requirements listed on the RFE. It states it must contain one of the following: a legible seal, a legible stamp, a signature with a title containing the words secretary, registrar, or births and deaths. The document doesn t have a seal, and the only stamp is not readable. When you translate it to English, the only similar wordings are civil registration and the signature is from the Deputy Conservative which it says is the appropriate issuing authority on https://travel.state.gov/content/travel/en/us-visas/Visa-Reciprocity-and-Civil-Documents-by-Country/Angola.html. Is this an issue? How should I proceed? Is a certified translation enough or does it have to be notarized as well?

The RFE also stated that the petitioner does not make enough, and to send evidence from a qualifying joint sponsor. It requests a complete I-864, with all pages with the same revision date? Do I submit the I-864 from the new joint sponsor only, or do I have to submit a revised copy of the one from the original sponsor? Also on question 1., would I check first or second joint sponsor, or only joint sponsor? Does the original petitioner count as a joint sponsor?

I m nervous about sending any documents since we are doing it without a lawyer this time. If there are additional errors somehow, will they send a 2nd RFE or just straight up deny the whole application?

I know this is a ton of questions but I d be super grateful for any advice anyone can give.

Probably an obvious question, but how do I find my Field Office/Service Center? On my receipt notices, it came from the National Benefits Center in Lee's Summit, MO,. I'm trying to check processing times with the tool on the USCIS site and that's not an option to select when trying to view processing times. I also live in Dallas, TX. Is something wrong here? My attorney mailed the AOS package to the USCIS Lockbox in Chicago, IL. I've gotten as far as the fingerprinting appointment so I doubt anything is wrong and I'm just being paranoid about a slow processing time, but I'll be thankful for any info!

I ve recently been approved (EB2). I have the EAD card and waiting for my Green card.

I would like please, if someone could help me to explain which kind of visa do I need to fill to help to bring my wife and my daughter to the US.

Ps. We are not official yet married and we have different nationalities.

Thank you you very much

Due to fact, that I have more two address history to provide. I am having problem on how to fill the Additional part 14. Please can someone help me, special those who had the same problem and their form were approved. Thank you!!