Most games that require you to sign in are down. It's most likely having something to do with their servers, as they have these types of problems sometimes. I'd guess in a few hours, or by tomorrow if the administrators are back at the office.
The issue will be looked at as soon as possible, when the staff gets back from their holiday. When they have located the issue, I am sure they will do anything in their might to return everything to normal and give you back your access to scores and any premium content you have purchased. However, please be patient. Wait for the end of the week, and if nothing has changed, send them an email stating your username, the game you have an issue with, the day you purchased the premium content and how long it has been unavailable. Until then, keep calm and try out some of the non-multiplayer games on the site, make some proper reviews for the games or experience the forums for a while.
