@Dinu_ks  it will be helpful if someone provide a solution 

 Hi @Dinu_ks 

In your case, please make sure to disable the random MAC address on your child's phone:
What Is MAC Randomization and How to Use It on Your Devices

Then, it is recommended to delete the original device you want to manage in the profile and then add the new one.

  @Joseph-TP 

How to disable it in android tv. Since option is not there

  @Dinu_ks 

I was able to manage parental control without any issue in ax10 router. Issue is with ax23 only. You guys try to provide a fix rathar than suggesting unusable things 

 Hi @Dinu_ks 

You mentioned a TV that is not controlled, right? Is the TV connected to the router both by wire and wireless?

If the TV is connected to the router both by wire and wireless, it will have two MAC addresses. Please pause both Mac addresses of TV.

If the problem still cannot be solved, you can also try to reset the router and create a new profile.

Press and hold the WPS/RESET button (more than 10 seconds) with a pin until the power LED light becomes quick-flashing. Release the button and wait for the Router to reboot.

Thank you.

  @Joseph-TP tv is connected through wifi only. And i tried resetting the router multiple times. Nothing works. Do u have any other fix. Or i need to scrap this router.

  @Dinu_ks which activity do you pause?

just created rule with empty allow list, added 5 devices

parental control works fine. pause - internet work. resume - internet don't work

  @YuriyB no luck. If i pause internet also everything works. Then what is the purpose of blocking