@Joec52 

I have the same model and the firmware is updated.. The Parental Control in the App is not working, same as what you described!

@Joec52 

Same thing here. School started up again and I opened the app to turn parental controls back on. It toggles on but then turns back off again not allowing me to make changes to the controls. Very frustrating since it worked great just a few months ago. Hopefully someone from tp-link reads this board and provides us with a fix.

@Mkrueger see if children missed with it while you had it off, lol they smarter than us cause they check to see if they can change password etc. See if there's another setting preventing you from making changes like do you have to restart the Router ect for it to take affect or when you change one thing. See if you can do it online maybe.

Two contact TP-Link with ticket 🎫 sounds like software update is affecting others In Parental settings