Hi I am having a problem with the powerline adapers in my attic. I have a good connection to the router but no internet, I have tried several adapters and the result is the same on them all. All adapers work perfectly on the ground and first floor with perfect internet, The wiring of the house all originate in the same fuse board, different floors fed from separate circuit breakers which is common in most homes, I have tried everything except upgrading the firmware. (V!) They used to work fine as I have my CCTV in the attic but now cannot communicate with it as there is no internet available, can you help me please Brian