Have you tested by IE browser?

Have you seen - http://www.tp-link.com/lk/article/?faqid=359 Give us images from your settings also.

I told about new one.

With parameters everything is OK. I think that is problem with power supply. If you have power supply 12V/1A please replace and try again.

Firstly you have to start some service/server on this port in your computer. Then you will see open port. The service must be listening on that port

UM24 wrote [COLOR=#000000] But when I am trying to connect another tablet/phone to the internet over the home wifi, What kind of operating system do you have on those devices? Please try enter DNS in...