Consult with a qualified lawyer to confirm your facts, law, analysis and conclusion. Good luck.

At this point it maybe cumbersome effecting a change to AOS. You may reconsider remaining with the consular process.

You can respond to the USCIS RFE with another attorney. Good luck to you.

It is best you consult with a lawyer in private to review your case and discuss viable options.

You may not have two nonimmigrant visas in effect simultaneously. In your case B and F.

Your state and local DMV, not USCIS controls the issue and administration of DLs.

That is correct for Cameroon. You may file for TPS if eligible and qualified.

Yes, a J1 visa holder may work remotely within the USA.

Your concerns are not directedly immigration. I have referred you to lawyers who may help. Good luck.

A correctly and timely filed I539 allows a person to remain in the US.