Use Tether or scan via PC, you cannot use WPS to connect two different RE

In the official website, T2U only support 2.6~3.16. The chip is MT7610U

you can contact with the support from France, maybe they will offer an explanation. [FONT=Arial][/FONT]

you cannot scan any signal or only the WiFi from your router. When you use phone, could you scan it? Are you sure you have enabled the WiFi function? Change a port and uninstall the Utility and test.

Change the channel and bandwidth of the router, it may be caused by the instability of wireless signal

see this FAQ, hope it can help you. http://www.tp-link.com/en/faq-1076.html