The visa application would require you to answer yes to that question

Child support is based on income. The visitation violations you describe does not affect support amount

No. You do not have to inform immigration of your spouses passing

You have a job now and have filed taxes the past years so calculate present income based on what you are making and use the last w2 you received

Yes u can. So long as your employer accepts your explanation

Yes but your petitioning child has to be on board.

Yes you can. Use your government identification card at the airport

Submit all evidence in your possession that responds to their request. The birth certificate plus accepted translation and other secondary...

If your payment is not accurate, USCIS will return your package with instructions

You have to be patient with the system. Your file is being processed. Once everything required is received, your consulate will schedule your...