Board Thread:Questions and Answers/@comment-26299257-20150410210121/@comment-26215551-20150410222255

I haven't played recently so I'm not sure myself, but from the comments section of the Recent Updates page, it looks like all of DMM's servers have been having some problems recently. Some people have been able to play Touken Ranbu or other DMM games briefly, but the servers haven't been reliable. In any case, this is happening to everyone.

I wouldn't put in a report just yet - much of the Japanese fanbase has and is complaining, so I think they are aware of the issue. The best option at the moment might be to simply wait it out a bit.