adding 2nd device replaces original device and removes child from original device

In my Norton Family Premier account I originally created one child and one device. Subsequently, when I add a second child and then a second device, the original device gets replaced by the second device while retaining the name of the original device with a parenthetical (1) designation added and the original child becomes "unprotected" because the original device is no longer present. When I then go to the original device and try to "Edit Accounts" I receive an error message stating that "This device belongs to a different Norton Family Account". So, I am unable to add a second device without it replacing the original device and am unable to have two children and two devices with each child assigned to their own device. I even created a trial account and experience the same result. Please help me resolve this situation.