National Institute of Informatics (NII) announced that planned maintenance is scheduled for Nov 10th, 2021.
This will be affect 
NII FileSender, large file transfer service provided by them.
◆NII FileSender Downtime:
- Nov 10th, 2021 12:00 – 13:00
Thank you for your cooperation.
If you have any questions and concerns, please access our online form
https://helpdesk.cis.kit.ac.jp/
and make an inquiry via the link “Get assistance for general IT problems and questions”.