Submit a ticket here directly. Describe your topology, special configuration and problem in details. http://ticket.tp-link.com/index.php?/Tickets/Submit

Submit a ticket here directly. Describe your topology, special configuration and problem in details. http://ticket.tp-link.com/index.php?/Tickets/Submit

Can you test if wired connection to WPA4220 differs or not? SSID and password of WPA4220 are the same as your main router? Try different channels on WPA4220. If it was working properly, you can also...

What's the operating system of your PC? Try to install chipmaker's driver (Atheros AR9287). https://www.atheros.cz/atheros-wireless-drivers.html

Upgrade latest firmware of C7. http://www.tp-link.com/en/download/Archer-C7_V2.html#Firmware

Allow the packets specified by any enabled access control policy to pass through the Router Host: Enter MAC Address of PC1 and PC2 Target: IP Address 1.0.0.0-223.255.255.255 Schedule: Every Day 00:00...