I have had the same problems as other people - when i signed in to sky player it was registering my computer again instead of recognising it as the main computer (already registered). And its not as if i could keep changing the main computer since you can only do that once a month.
I got to the 4 computer limit for registered devices and i deleted one of them so it could register it again and i would be able to watch tv but it didnt register again and it isnt letting me watch anything at all because it isn't recognising my computer.
So i deleted all of the registered devices thinking my computer would just register again when i logged in but its not and now i have no computers registered and i just cant use it.

Any help is appreciated.
(sorry for the long confusing post!)