Phill.ellis wrote Did the LED lights all just go off on the power line adaptor when you first noticed the issue? On one of my adapters the LEDs have all gone off, however the pass through feature...

Update it here if there is any progress. :)

No lights at all? Completely dead? Is it still under warranty? If not, you have to buy new powerline adapters. http://uk.tp-link.com/support/rma/

The screenshot of status page is the one when downloading at max speeds? Try to configure bandwidth control to see if your TD-W8980 will work properly. I suggest you submit a ticket here....

@Madnezz As you said that you want to block all internet, you didn't add any URL, right? But if we didn't add URL, it will block all internet access and it is not limited by the schedule. In your...

It is a limitation indeed. You may try firmware upgrade as the current one is not the latest version but not sure if it helps.