US Immigration from Bangladesh

My husband came to the United States in April 2021 and we applied for ROC in 2 years. In 3 years we applied for citizenship. In October 2024 he received an interview date, however, 1 week before the interview the USCIS called him to bring me to the interview. In July 2024 I left to go study out of state and he s been trying to transfer to my state so we can live together. We currently use my parents address as our permanent residency since neither one of us is stable currently. If my husband moves to where I live, is it okay for us to keep using my parents address as our permanent residence?

My fianc (74yr, M) and I(24yr, M) are applying for a K-1 visa, and we need to provide chat logs as evidence of our relationship.

We've been talking daily for years (2021 till now) on Messenger and WhatsApp, including video calls.

Should I take screenshots of every chat or just select key moments?

How many screenshots should I include, and what s the best way to organize them so it s clear and not overwhelming?

Any simple tips or advice would really help!

Btw, I'm from Bangladesh.

My DOB is 18th August 2001.

My Mother (LPR) applied for my I-130 December of 2016.

My I-130 got approved January 2022.

I was DQed May 2023 and have been waiting for an interview date since.

According to my CSPA age have I aged out? If I was to subtract the processing time of my i-130 by my current age then my CSPA age would be around 17? Unless there is something I'm missing.

I would like to include that during 2019 we were asked to provide a DNA test which we did and was accepted.

My question is, Do EB1 gets priority before Eb2 or Eb3 or they are all in the same queue?

My mother (LPR) lives with me in the US as a dependent. She applied for my 3 younger brothers who have their interviews in a few weeks. I am the financial sponsor for their visas. The list of interview documents they should bring with them includes proof of domicile for our mother. I am not sure what proof to submit because she does not have any of the documents listed on this page: https://travel.state.gov/content/travel/en/us-visas/immigrate/the-immigrant-visa-process/step-1-submit-a-petition/i-864-affidavit-faqs.html#aos18

She has a state ID, social security card, medical bills, and I have claimed her as a dependent on my tax returns for the past 5 years. Will these suffice as proof of domicile? I wrote a letter explaining she is fully dependent on me as part of the initial paperwork she submitted. Should I write another letter for my brothers to take to their interview?