A.
Please click on the Expo ID login link below and click "Forgot Password?"
Expo ID login:
https://usrmng.accounts.expo2025.or.jp/idmng/users/screen/menuScreen
[Reference] How to reset your password (manual):
https://www.expo2025.or.jp/wp/wp-content/themes/expo2025orjp_2022/assets/pdf/tickets-index/id_problem_solving_manual_en.pdf