Do the router and AV500 with the same wireless name and password? Better to setup them to the same one. http://uk.tp-link.com/faq-1611.html Besides, even though they have the same wireless name, the...

No, the extender will not update the key automatically. You need to reset the extender and reconfigure it.

It seems the repeater works as a bridge between the router the clients after the repeater. So the router can see the repeater but not the devices hide behind it. They still can access to each other,...

Glad to hear this not bad result.;)

Is your deco woring on router mode? Make sure the deco running the latest firmware and the IPTV is working ok with your modem. Also check the speed of the deco is enough for IPTV and setup high...

It seems your phone has a slow response to Deco APP. Perhaps you just need wait more time, then the deco will show up.