New firmware is available here. http://www.tp-link.com/en/support/download/?model=TD-W8901N&version=V1#tbl_j Give a try.

Your model and hardware version? It is not TD-W8968 V3, right? Did you reset it to factory defaults?

Hi alaska pete, the router cannot but a third party software may be can make it.

Any device connected to your router can access internet normally? Go to check the IP address, default gateway, DNS etc. and write them down. On the Windows 7 one, try to remove network profile and...

To pick up Wi-Fi signal from another extender is not a good idea...Connection may be quite slow and unstable. Did you try to set up TL-WA890EA from quick setup on its web browser?

Site A（Camera）--------------------Site B (Laptop) You are sure your camera can work in that way? In most cases, to link two Tl-WA5210G in different bulidings far away from each other, we configure...