I'm sure there was some doubt on your part after posting a negative tag on an account, and I honestly think you can turn it neutral if you really aim to warn people the account has changed hands instead of damaging it with a negative tag. All issues should be resolved differently and on a case-by-case basis. I think it's very rare for someone to admit that it's his father's account [^{he may have been honest or who knows].} But the thing I don't understand is, why did he change the email from that account while he has access to the account.

While for different cases, you don't have to turn negative into neutral as long as it is known which accounts were sold, hacked and changed hands. CPNpr Changed Hands?