Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I presume and guess that you are using an Apple computer.
If so, log out of the account that is showing Parental Controls messages.
Log into an account with Administrator privileges.
click on the padlock and enter Administrator username/password ***** prompted
Then select the account you were getting the messages in when logged into it, and disable Parental Controls for that account.
Log out, log in to the first non-administrator account, see if the messages have stopped.
Let me know how it goes, please. Use the Reply To Expert function to inform me... if you need more help, I will advise you further.