If your other is still competent she can issue a new POA. If not, someone will need to get guardianship.

Get a new lawyer quickly, so you don't lose your right to appeal.

If the guardianship wasn't signed off by a judge, it's a worthless piece of paper. Go get your child.

No. If you can see something outside that is public view. Everyone may take photos of things they can see outside.

POA doesn't outrank custody, unless you have no adjudication of parentage and/or parenting time.

No, he is only to have the supervised visitation with 3rd party supervision. He should not be at the school or school events.

You need a new lawyer. .

Get 1 or 2 good attys that practice criminal law and child abuse cases.

He has to evict you just like any other landlord.

Federal Law requires CPS to investigate every report of child abuse. You can't sue the reporter of CA.