I 130 petitioner name change ?

It sounds like you should definitely meet with an attorney. Yes you should provide an explanation for her change on the certificate of...

Can I be a joint sponsor for someone but I am waiting for my naturalization certificate ?

Yes you can be a joint sponsor and should provide a copy of your green card. Or you can wait til you get your certificate of naturalization.

Yes a joint sponsor can sponsor another person. Each affidavit of support must have the necessary documentation.

Applied for I -130 Petition for relative

No it should not create an issue. The new I-130 is a separate petition.

In the case of your other sister and your dad, the fees being waived means they did not have to pay the filing fee. It would be best for you to...

Can I travel within us while my case is in process?

Since there is a checkpoint you should bring copies of your receipt notice for the green card application.

On the green card application and frequently during the interview it requests for you to list all of your children. Having a child out of wedlock...

When can I file the I-751 (Petition to Remove the Conditions of Residence) ?

No the law states that you must file your I-751 1 year and 9 months from obtaining your green card. So you will need to wait until March April 2021...

I agree with my colleagues. Since you did not enter the US legally, your son cannot file a petition for you that would be approved.

I agree with my colleagues. It is better to follow the instructions given by USCIS. This should not lead in an denial of your application. ...