Vivian wrote Try different channels like 157, 153, 149 etc. Try channel width 40MHz or 20MHz. Already did that too.

Is your firmware updated? Check and if necessary get it from here >>> http://www.tp-link.us/download/Archer-D2.html#Firmware

Vivian wrote Describe the problem in details. What's the firmware version? Is it up to date? The signal I get is about -75 to -78dBm on 5GHz and -63dBm on 2.4GHz There are 0 devices in the vicinity...

Region : Sri Lanka Model : Archer D2 v1 (AC750 Wireless Dual Band Gigabit ADSL2+ Modem Router) Hardware Version : Archer D2 v1 00000000 Firmware Version : :0.6.0 0.11 v003e.0 Build 150427 Rel.60143n...