@AbrarMasum Check section 4.5 - Parental Control from Archer C24 user guide.

What's the device you're trying to bind ? Have you tried to bind an IP address outside the DHCP pool ?

@L.N Better keep that off if you have to switch floors.

It would be helpful to post some router logs while issue occurs, if the support wants to analyze them and give a solution.

@fire.power You can try on Manual with Max idle time 0, as well: If the issue still persists then try to set these and test:

@brainii It won't hurt if you test it. After all, when in AP mode, this is the recommended cabling for your device. Keep in mind that installing 3-rd party SW on your device may void your warranty.