Get the beta firmware to solve such a problem from TP-LINK support team. http://ticket.tp-link.com/index.php?/Tickets/Submit

First, to remember or forget a network profile depends on a client itself instead of a router. Normally, if we delete the old profile and don't reconnect, it won't show up on profile list. Second,...

Try to access the drive following the guide below. http://www.tp-link.com/en/faq-420.html

What's the firmware version? Is it up to date? Provide screenshots of your configuration.

Read the post here and it may help. http://forum.tp-link.com/showthread.php?81255-Archer-C7-Malaysia-Request-Pressure-for-firmware-update-to-support-Tether-App&p=161980&viewfull=1#post161980

when I go take a look at the wireless networks on my smartphone, tablet or laptop the 5ghz signal is not appearing... Are you sure those devices support 5GHz as well except 2.4GHz? Have you ever...