TP-Link TL-WA855RE User Manual page 17

The extender is failed to connect to the NTP server, or failed to obtain
●
the DNS server address. Please check your host network.
The wireless is on and encrypted.
The wireless is on and unencrypted.
Router：The wireless is off, or the
/
Extender：The wireless is off.
The icons are selected.
/
Instructions
connection is failed.
1.
Launch a web browser, log into http://tplinkrepeater.net, and then go to
Settings > Status page.
2.
Click the icon of your router, the extender and clients. The detailed
information of the corresponding icon are displayed below.
View the Information of the Extender