No such a feature.

How about status of WLAN light? On web interface of WR740N, go to Wireless Settings and check if Enable Wireless Router Radio and Enable SSID Broadcast are selected... You can go to System...

Upgrade the firmware 140528 and follow the FAQ 704 to reconfigure it. http://www.tp-link.com.my/support/download/?model=TL-WR841ND&version=V9#tbl_j

No problem with your configuration. It should be a compatibility issue. Your WR941ND supports four address frame WDS while ZTE MF90 may support three address frame WDS... You may confirm with ZTE......

The screenshot is too small... Did you try wired connection to WR740N? Can you access internet or login its web interface by wired connection? If you hard reset WR740N, what happens? Though I can...

Did you try to unplug the telephone line first and hard reset it? When you reset it, can you see any changes of indicators on its front panel? Are you looking for a fiber modem or a router which can...