Do you know Japanese? If yes, it's recommended to post the ISP error here as well. Maybe the ISP provides PPPoE connection to you. Regardless of these, have you got any problems when watching TV...

Which wireless band do you connect the TV to? 2.4GHz or 5GHz? And what's the distance between the TV and the router? If possible, you can wired the TV directly to the front-end modem router (not the...

Actually the V3 and V4 versions share the same firmware. And the biggest differences between them is the logo (V3 version use the old logo as TP-LINK while V4 use the new one tp-link).

It seems that you have changed the router's LAN IP address or management IP address. Could you please provide a screenshot of your Mac's IP parameters after the factory reset? And try to access the...

Please find the hard RESET button at the back of the router. Press and hold the reset button for about 8 seconds until all the led lights are on. Then release the button, and wait for 2 minutes until...

It's normal that the laptop couldn't see the pc when you create a network like wireless laptop - broadband router - C9 - pc, Because C9 is an NAT(Network Address Reservation) router, which means that...