@DrRZ Try to disable the firewall on the clients and C9. Then try to ping the local device. Besides, have you ever enabled remote management on C9? Any updates, be free to let us know.

@AsifEmon When it failed to reconnect to the internet and shows red, please log into the web UI and check whether it has valid internet IP address and gateway. In the meantime, connect your computer...

@DjVirusPL Hi, it is not a fake router, it is still a TP-Link router, which is sold in the mainland of China. That is why you see that the menu is in Chinese. May I know where did you buy this...

@StanLee Hi, the Archer C60 has the 100Mbps LAN ports, which means that the wired speed from Archer C60 won't be higher than 100Mbps. Interface 4 × 10/100Mbps LAN Ports 1 × 10/100Mbps WAN Port For...

@hamimrahman.17 From the attached video, you changed the login username and password, not the wireless password. Please go to the wireless-wireless settings page to change the wireless network name...

@RatherPlayGolf @jcsogo Hi, the 5GHz of Deco supports band 1, which includes channel 36-48. You can turn off the 2.4GHz first and connect the device to the 5GHz and then disable the mesh technology....