@User521 Parental control is usually used for kids' devices, and if they are allowed to access the router settings, they will be able to access the router and modify or disable parental control for...

@GaganSingh Based on the specification of their website, the Archer C20 Ethernet ports are all 100Mbps ports instead of 1Gbps ports, in that case, the internet speed will not be higher than 100Mbps.

@HomeNotifier Usually system log will show WAN status, which indicate the internet connection status, so you could try to check if there is related records for now in the system log.

@SergejKiller You could find the IPv6 Firewall settings on Advanced-IPv6 page, then add necessary firewall rules:

@Naveen_T I suppose you could configure static IPs on your LAN devices and leave the DHCP Server enabled for other client devices.

@Harsimran_Singh TP-Link Wi-Fi Routers have removed USB printer sharing function, maybe only some old firmware still have it, if your printer has Ethernet port or Wi-Fi function, it is recommended to...