Try different web browsers or different computers if possible. Check connection between your PC and LAN port of WR841N. You can also go to Network---WAN to select the connnection type. If it works....

It is important to upgrade the latest firmware first. http://www.tp-link.com/en/download/TL-WA850RE_V1.html#Firmware Reset and reconfigure it. If the problem continues, login its web interface to...

Did you try to install the latest driver for Windows 8.1 on Windows 10? http://www.tp-link.com/en/download/Archer-T2U_V1.html#Driver

You cannot install the driver for Windows 8 successfully, right? Can you connect the computer to your router by an ethernet cable to access internet and update the built-in driver of Windows 10? The...

So there are two WPA4220KITs(four units in total)? Two PA4010s(small units) are both connected to LAN ports of your router? Are you trying to make two kits work in differnt powerline networks or the...

Can you install the powerline utility and check the rate showing there? If the rate is too low, follow the guide below to have a check. http://www.tp-link.com/en/faq-409.html