What's the model number? And what do you mean by " WAN ip shows different to my Public IP"? Is the WAN IP the public IP or private IP address? Try to access WAN IP:16000 from external network, will...

Did you refer to the Quick Installation Guide? Not sure about your ISP and network topology, it's better to contact tp-link support hotline for help.:)

Is it this model? http://uk.tp-link.com/products/details/cat-11_Archer-T1U.html If yes, this model only support 5GHz wifi, if your router only has 2.4G wifi, then it cannot find it at all. If your...

Not sure if it is compatible, it says Linux (Kernel version 2.6~3.16) on the official website.

It can find your neighbor's 5G, it means the adapter is working properly. Did you try to change the channel for the 5G wifi of your router? There are 4 bands, can try one channel in each band and see...

Seems the adapter doesn't support monitor mode:(