Due to a volunteer’s contact, on November 16, we discovered that some browsers (Google Chrome) were unable to log in to the site.
In addition, there was a possibility that new registrations were not working.

After confirming the problem, we restored the system on the same day, and it is now working normally.

We apologize for any inconvenience this may have caused.
We will make further efforts to ensure that everyone can use the site with peace of mind.