Thanx for your reply. Instead of Quick Installation, I tried to adjust the settings manually and after I selected WPA-PSK/WPA2-PSK as wireless security, It worked :)

Model : Hardware Version : Firmware Version : ISP : Hi, I use a TD-W9970 v3 modem as host and TL-WA850RE V4 range extender with factory settings . After quick installation, I changed the SSID of the...