Talking to his lawyer would be the best idea. You can then return to the judge and appeal that the order is not being followed, so perhaps custody should be changed (provided you can prove that you are responsible enough).
A father can get custody of the children if it can be demonstrated that that is in the best interest of the child. The father being the primary caregiver would help.
The father was awarded custody of his children.
You have the visitation rights that were established in the divorce, and you have no custody rights.
Guardianship, not custody
If she has custody of the kids. Legal custody.
You petition the court. They are the ones who grant you all types of custody.
Yes, if the father is not given custody he will be obligated to keep paying support to whomever the court awards custody or guardianship of the children.
yes
The father will find it easier to get the custody of the children , as the wife has left both the husband and as well as the children and is least interested in them.
Generally, they would go take the father to court and claim for custody (protection/safeguarding) over the children.
Only if she is unfit or willing. Otherwise the most he can get is shared custody.
As the father has joint legal custody of the child he can not say he does not want the child at the paramour.