A fix has been implemented and we are monitoring the results.
Posted Nov 07, 2017 - 14:23 JST
We're currently investigating. As for the specifics, the problem was that English was initially displayed in our users’ pages but could not be switched to a different language for word press plugin user.
All other services are unaffected.
Posted Nov 07, 2017 - 13:20 JST
release for this morning did not succeed, we are backing it out.