Check your repair contract. Further ,if you are one day late, what would be the point of a fight?

Yes. You had plenty of days to leave after judgment that you had not paid rent.

You need an attorney. Get one ASAP

Call the court and see if he filed that the judgment has been paid. If not, and you still cannot reach him, you should meet with an attorney.

Pay child support payments by check so there is a record.

If the doctors say you issues were because of mold, yes. And then seek an attorney.

Also, be practical, if the mistake is only a couple of hundred dollars, it is not worth fighting over. Everybody makes mistakes.

Get an attorney to file a motion for modification of custody.

Check your sales contract and your warranty contract.

This is not a legal question. It is a question you should ask his psychologist.