So, I was going to WoS. When i logged in, I tried to spawn nrg and it said: Server: Invalid Command or something. And I lost my scores again. I tried /restore but it was invalid command too.

Don't Jump to conclusions that the server was 'hacked'.. because it most likely is not.

Yeah, this happened last night and now as well, JaTo said the server can't connect to the database and should be fixed soon. So no the server Hasn't been hacked.

No server was not hacked. Be patient please we will fix this soon.

If you want command to work you will have to spam it.