@Bloom What is the current network topology/diagram? Is there any device connected to the blue port of the router? What kind of network connection provided by ISP? Like the ethernet connection or the...

@Ohh Please double check their IP address and default gateway. Make sure that they are in the same subnet. Try to ping each other via the IP address; and please show us the picture of ping results....

@Staybe What is the model number of the router? Try to do a PPPoE connection on your computer with it connected to the modem directly to do a comparison test. Click here to get the instruction. Note:...

@Nahian Can 5GHz be detected by other wireless devices which support 5GHz as well? Click here to login to the web interface and adjust some wireless settings to give it a go. Note: You can adjust the...

@T.M.P. What about the current internet IP address? Are you able to access it remotely with the WAN IP and port number? Please show us a screenshot of the error message when you tried to access it...

@K.raj What kind of password did you enter to login? Theoretically, it is admin by default. You can change another web browser or device to login to give it a shot.