It is best to have an attorney assist you with the nunc pro tunc motion. You are in a difficult situation.

What date is more significant for consulate officer: date of registering the marriage or the day when the certificate is issued?

I agree with my colleague. It will depend on what is necessary for the validity of your home country.

Marriage-based Green Card Interview Concerns.

Given the short amount of time of your relationship before you got married this could pose a lot of questions by the immigration officer. Even...

My change of status was finally approved After just a month and a week

It sounds like you need to start with classes right away. Contact your school's DSO.

Legal seperation and green card

It should not. As you stated you are separated. so you are still married to your husband.

I made a mistake in my DS 160 form, and my interview is in two days, can I still do something?

You can correct the mistake at the interview.

I"m qualified for tps , what things can i do?can i apply for ID, driver"s license , get free treatment,.............

You should be able to obtain a driver's license and work permit. It is best to consult an immigration attorney.

After a status conference with USCIS , how long before I get my status adjusted?

I agree with my colleague. Your attorney is in the best position to respond to this question.

Immigration advice about NVC ( national visa center )

You should look at the instructions from the NVC and follow them. Generally they want originals.

I-130

I agree with my colleague. Transfer of cases is very routine with USCIS. It does not reflect on your application.