Yes, expect some delay due to deficient I-864. The amount time is based on several factors too numerous to be discussed here.

In general, it takes a few weeks to receive your green card. Call USCIS at 800.375.5283 for card production/status inquiry.

The scheduling times will vary nationwide. Contact your local USCIS office for guidance.

Going to the issuing office is one option. You may also renew and pay online for I-94 at the CBP's DHS.Gov Website. Follow the instructions.

In general, yes. However, pay close attention to why application was rejected and refrain making same mistakes again. Good luck.

The Form DS-5535 Supplemental Questions for IV visa applicant is only completed when given to you by a visa officer at the interview. It is meant...

Affirmative and within the validity of I-551 stamp.

The two iterations of employment are listed separately and sonsecutively.

In general, school certified transcripts are considered bona fide evidence of a degree.

Clearly you are not the petitioner. It appears you may be a co-sponsor, but not sure. Your inquiry is not clear. Since you cannot get an attorney...