You have a legal question which was determined by a court when your child support was established. It is covered by your court order. What can be done depends on the court order. You may need to go back to court or see a lawyer.
You can't. If you are not the child's legal guardian you can't do anything.
Not if it's approved by the court. see link
No the child support does not give you parental rights, Speak to the Local bracnh of Citizens Advise. You should have parental rights peried but to us men they are not worth the paper they are on. Law always sides with mother.
File a motion to modify custody. see links
Contact your State's child support agency.
A DNA test is used in situations when paternity is contested. That is if someone gets a lady pregnant and claims it is not his baby, the mother can insist on a DNA test for purposes of child support. If the mother is the biological mother of the child, the test will be stupid since she had the baby to begin with
You and/or your State's child support agency can subpoena this information.
Child support is to pay for you to live, not to give to you as pocket money. If your mother pays for the roof over your head and your food, heating, clothes etc then she can be said to be paying for you to live. So you wont be able to sue her. Plus, in order to sue someone there needs to have been a contract between you that she has breached.
go see lawyer
You can take it to court but if you acted as father sometimes you can owe anyway because you accepted that role.
You still have to pay child support. Parental rights and child support are 2 separated issues. You have to pay for your child unless the child gets adopted.
still has to receive until 18