This is a very difficult situation and one that unfortunately presents itself quite often in divorce cases. She will certainly argue that the ring, and thus the stone, was a gift in order to be able to keep it. This is a very fact specific situation and your son should speak with a family law attorney about it.
If you and your wife have reconciled, yes your wife needs to notify the Child Support Enforcement office that she no longer requires its services and to close the case. If you owe arrears to the State due to your wife seeking public assistance in the past, however, you may not be able to just close the case even if your wife cooperates in doing so. Contact a family law attorney for a consultation to discuss the best way to proceed.
It is difficult to say. In order to give you a more definitive answer, one would likely need to see the transcript and analyze all factors relevant to your case. Meet with a lawyer in your area to discuss your options.
If there has been a substantial change in circumstances since the amount was ordered, you may be able to request a modification of the payment amount. Meet with a lawyer to discuss your options since more information is needed to assist you.
You can contact DCF to report that the child is abandoned, but there is no guarantee that after DCF becomes involved you will have the right to keep the child in your care. Meet with a lawyer with whom you are comfortable to discuss further details in your case and to determine the best course of action. Best of luck to you.
When you say you received custody, if this was by court order, it depends on what the order says. If no order was entered or the order is silent about support obligations, your husband likely has no obligation to provide financial support for the children since he is not their legal father. Consult with a lawyer in-person with whom you are comfortable to go over your options for finding and pursuing the legal father of the children for support, if any.
If your court-ordered parenting plan says you get your child 50% of the time, you need to enforce that. If he calls the police, he will likely be the one in the wrong, and you should have the court order to show the police. It sounds like you need to file a motion for contempt and enforcement on some issues, and I encourage you to set a consultation with a lawyer with whom you are comfortable to go over your options. Best of luck to you.
Typically, you need to file the divorce and then file a motion for exclusive use and possession of the home. Consult in person with a lawyer with whom you are comfortable to go over your options so that you do not take actions before divorce is filed which may be detrimental to you during the course of the case.
If the divorce happened in Georgia, this is a question for a Georgia-licensed attorney. In Florida, I am not aware of a law against adultery, but you may want to ask a FL or GA licensed criminal law attorney about this issue.
The answers to your questions depend on factors not shared (and which should not be shared on this public forum). For meaningful advice, you should schedule a consultation with a lawyer with whom you are comfortable to go over your options. Generally, since child support is a right that belongs to the child, you want to make sure that any arrangement you enter will hold up in court and will not affect your child's right to the full amount owed to him/her under state guidelines.