@Luck79 What's the model No. of your extender? Such as RE200, RE300. Also please login to it, and go to System Tools-->Firmware upgrade, then check the firmware and hardware version. One more thing,...

@Delvin You can add 2 or more 7/8/9 series powerline adapters into your network. Our powerline adapter support multi nodes. Normally we sell kits because only one powerline adapter cannot work. But...

@Rand One RE450 can not be detected its wifi after the firmware upgrade, right? Normally, firmware upgrade will not change any settings on RE450. Please check this RE450 is still working and LED...

@Salvo1969 Sorry would you please describe your issue in English? Then I can know the issue better then provide help. Anyway please check the 5G channle on your router, try to fix 5G channel to 36.

@AlfDiMat What's the hardware and firmware version of your 860RE? You can check this information in its web management page: System Tools-->Firmware upgrade Also, please update the firmware of device...

@bhaiyaji Please check C1200 and C7 in our website for more details. Archer C1200 https://www.tp-link.com/home-networking/wifi-router/archer-c1200/ Archer C7...