After four weeks of hours on the phone and online trying to get firstly one then a brand new suresignal to connect I took one down to a neighbours house (different router and broadband supplier) it fired up immediately so took it back home and that now works fine. Plugged in my older one at home and same old solid orange lights (1+3) so took it to my neighbours got it connected there and then brought it home and it now also connects fine.
Worth a try if you are experiencing problems as it obviously resets something in the device to allow it to work again.!
