Help - Freedom messed up my wifi/internet connection

Hi all,

Need help on this, my kid installed this freedom app on his phone. when I stopped it and uninstalled then reboot. It could not connect at all. I need his phone to connect to the internet to monitor him, because right now it could not connect to the internet nor mobile data. I tried a plenty of solutions that I have searched through google, none of it works.

I need this to resolve so that I can install app-lock, cause his buying apps that are not suppose for him and its illegally acquired

thank you in advance