These are not US immigration issues. The change or addition of a new passport will not impact act your processing.

You need to consult with a Board Certified immigration attorney since you are getting very bad advice from some.

Unfortunately, it is unlikely you will get an F-1 visa on any basis. The consulate does not believe you will return home after completing your...

You still must wait for the priority date to become current. Changing to AOS does not change the quota requirements. You should consult with a...

As long as the passport I-551 stamp is valid, you can travel with it and a current passport.

The short answer is no. The longer answer is more interesting but still no.

Unfortunately, sponsors cannot be removed until you work and your employer pays FICA for ten years, or you become a US citizen. Good luck.

The instructions state to return "the last EAD". It cannot be more clear than that. Whatever you received last is what is submitted. If you...

You need to consult with a CPA, not an immigration attorney. Good luck.

For immigration issues, yes you are are liable. But you and your family have much larger problems than 864 liabilities.