US Immigration from Finland

We are in our AOS process right now.

Is it possible for the immigrant (greencard application) to sign up for a credit card?

What are the processes? Does she need to establish credit and sign up for creditkarma or something first? Because she has no credit history in the US.

I just found out after 1,5 years of staying in the US that I was suppose get the social security figured out or that there was an opportunity to get one once entering the US ha wow . Just wondering who is responsible for informong aliens about this . So unacceptable I thought the only way to get it was through green card and now I'm struggling with the evidence since I'm not able to even get a joint bank account here . Wow just wow can't believe it

If the intending immigrant has been approved for work authorization, and they get a job, does that income factor in towards the Affidavit of Support?

Is it possible to put my wife on my CoveredCA plan while we are adjusting her status?

What options does she have? We want to see a gynecologist about birth control and some symptons.

Thank you

On the i-485, it asks about my wife's address history.

She came here in early June as a visitor originally. It was only towards the end of her visit we decided to do the adjustment of status. She still had her job/lease etc in Finland.

So in the address history, what date does she put as the start date of living here in the US with me? Is it the day when she came to visit? Or when she decided to do the adjustment of status? Or when her Finnish apartment lease officially ended?

She is not officially on the lease on our current apartment.