For those planning to visit Japan soon and taking advantage of Visit Japan Web (VJW), please note that VJW put out an announcement (https://www.digital.go.jp/en/service...t_japan_web-en) regarding fake app pretending to be VJW and VJW decided to implement multi-factor authentication so if you have problems with VJW, you might want to clear the browser cookies related to the VJW domain.

You can also see the same annoucement on the main VJW website (https://www.vjw.digital.go.jp/main/#/vjwplo001).