I've registered on this sight because upon logging into smp4.empireminecraft.com it said i must register here to play. Now after signing up on this sight, it says bad login when i try to join... Whats the problem?
If it says "Bad Login", then you should just close and then open your MineCraft again. Works for me .
It tells you when you join it could take up to 60 seconds for the game servers to get your registration. It also tells you to start with the guide, so I recommend you take a look at that