@NukZey Yes, you can connect C9 to your modem. Kindly refer to this FAQ to configure your router: https://www.tp-link.com/en/support/faq/2169/

@Vinesh1882 Hi You can do a factory reset for the router, then it will lose the old configuration as default.

@MoonMoon Hi May I know where you see the percentage, from the TPMiFi APP? You can try to plug the power adapter in a different socket, use different USB cable and a different power adapter to test...

@JBRP Hi May I know which firmware you use now? Please kindly try the new firmware for C1200 US V3: http://support.tp-link.com/f/5d6c6396b0/?dl=1 Besides, to avoid the effect from the power supply,...

@A6hay Hi From the description, it seems the router has some hardware issue, the router now seems to be on the recovery mode, you can refer to our Warranty & RMA Policy to do a replacement.

@JoshLadd7 Hi Please kindly check whether the IP you get is a public IP? If the IP your ISP provided is a private IP, the NAT on the ISP side will limit the transform. You can check whether the IP on...