@Draiman Are you saying the 5G or 2.4G connection? Try to modify the wireless settings on the AX11000, you can run a Wi-Fi analyzer, review all the surrounding channel, then choose one that with less...

@Nicolas1982 May I know who is your ISP? Is the WAN connection type Dynamic IP or Static IP? As per the log you attached, the C80 didn't get an IP address from the NBN connection, you need to figure...

@Dekenba Is the QoS setting on the C4000 correct? You can check this article to confirm it: https://community.tp-link.com/en/home/forum/topic/257504 If this cannot be optimized, you are suggested to...

@Zyjah Is the model number Archer C50 v4? What is the firmware version? You can find it on its web interface page. When did you purchase the router, and when did the issue start to happen? Please...

@USAS Do you mean it is the firewall on the router that blocks the wired devices to show up on the client list? USAS wrote @USAS Firewall.....

@RobTheAnimoo May I know who is your ISP? Do you mean the WAN connection type on the AX1800 is static IP? Is this required by the ISP? Will you be able to get a stable connection by connecting the...