You should provide the I130 receipt notice for the adjustment of status application.

More information is needed about the previous denial and ban. Consult with an attorney for guidance.

Yes you may request a reschedule and should contact USCIS for such.

No not with the period of unlawful presence. Wait until your spouse becomes a USC and then you may adjust status.

No not without NVC requesting such. You can notify NVC to request additional documents be uploaded but better to wait for their guidance or bring...

What is your question? For fiancé visa guidance, contact an attorney for assistance.

With a previous denial it is best to work with an attorney for guidance.

Yes you may withdraw and the two month overstay should not cause issues upon reentry.

This should likely be amended but best to consult with a tax accountant for guidance.

Yes, they may travel with valid passport and proof of DACA.