Immigration Form I-944: Page 13, part 4, question 5: what should I enter under the three boxes asking about “certification”?

It is best to consult with an attorney. You can use the search finder on Avvo to find an experienced attorney.

Paper mail is often better as you have a copy for your records. Refer to the USCIS webpage for the direct filing address. It is best to consult...

What are the current processing times (estimated) for k1 and i-130 visas?

Refer to the USCIS webpage for up-to-date processing times.

Unfortunately, if your case needed additional review these delays are normal.

How much time does it take to process my file to reach NVC?

Best to refer to the USCIS processing page for up-to-date information.

Are spouses in the i-130 process getting their visas approved quicker currently ?

The I130s for spouses outside of the United States have been delayed. You can attempt the K-3 although there will be delays with this as well.

Give an indication on visa, your entry to the mainland may be denied.

About green card holder

You should plan to return before one year absence is triggered.

USCIS RECEIPT NUMBER

Be patient as receipts can take well over 1 to 2 months.

Yes you may under the C31 VAWA category.