We on Behemoth (Primal datacenter) were having the same issue since last night. Just about 90 minutes ago I was able to log in and do some roulettes, but some people from my server are still having problems logging in. I'm only presuming from observation, but it seems some of the datacenter machines could've stopped working and then the game world's capacities are criticaly low now, so only a few people are being able to play. Still no official word from SE.