One Time Password

• [One Time Password Authentication for Expo ID] Cannot return to the login screen after viewing the authentication email.
• [One Time Password Authentication for Expo ID] I haven't received the authentication email.
• [One Time Password Authentication for Expo ID] The login screen disappears after viewing the authentication email.
• [One Time Password Authentication for Expo ID] I can't get "Authentication by Email" to work. I don't know how to do it.
• [One Time Password Authentication for Expo ID] I clicked on the link in the email but now I can't proceed. What should I do?
• [One Time Password Authentication for Expo ID] I cannot set up identity verification because the message "auth.accounts.expo2025.or.jp Please enable authentication (biometrics, passcode, pattern, PIN, etc.) on your smartphone or computer" is displayed.
• [One Time Password Authentication for Expo ID] I used to use "Biometric and Passcode Authentication, etc." for the identity verification of my Expo ID, but is there a way to set it so that "Authentication by Email" appears from the next login?
• [One Time Password Authentication for Expo ID] I received an one-time password email even though I didn't request one.
• [One Time Password Authentication for Expo ID] "Authentication by Email" entry locked me out.
• [One Time Password Authentication for Expo ID] "Authentication by email" is not displayed on the identity verification screen.
• [One Time Password Authentication for Expo ID] The validity period of my one-time password by email has expired.
• [One Time Password Authentication for Expo ID] I am asked for a one-time password by email every time I log in.
• [One Time Password Authentication for Expo ID] I received several one-time password emails.
• [One Time Password Authentication for Expo ID] The message “The one-time password by email entered is incorrect.
• [One Time Password Authentication for Expo ID] If changed my registered email address, but did not receive the one-time password email to my new email address.
• [One Time Password Authentication for Expo ID] I have entered the one-time password provided in the email but my identity cannot be confirmed.
• [One Time Password Authentication for Expo ID] I want to log in to my Expo ID using "Authentication by Email", but I haven't received an email with a one-time password.
• [One Time Password Authentication for Expo ID] What should I do if I changed my device model after setting up "Authentication by Email"?
• [One Time Password Authentication for Expo ID] I want to change the email address that I receive the "authentication by email" notifications to.
• [One Time Password Authentication for Expo ID] How do I log in and set up "Authentication by Email" for the first time?
• [One Time Password Authentication for Expo ID] I have set up "Authentication by App" but want to change to "Authentication by Email".
• [One Time Password Authentication for Expo ID] I want to cancel "Authentication by Email".
• [One Time Password Authentication for Expo ID] I have already set up "Authentication by App", how can I also set up "Authentication by Email"?
• [One Time Password Authentication for Expo ID] I have set up "Biometric and Passcode Authentication, etc." but want to change to "Authentication by Email".
• [One Time Password Authentication for Expo ID] I have already set up "biometric authentication, passcode authentication, etc." How can I also set up "Authentication by Email"?
• [One Time Password Authentication for Expo ID] Is there anything I need to prepare before setting up Authentication by Email"?
• [One Time Password Authentication for Expo ID] Can I set an address other than the email address registered with my Expo ID for "Authentication by Email"?
• [One Time Password Authentication for Expo ID] What is "Authentication by Email"?
• [One Time Password Authentication for Expo ID] Where will I receive the "Authentication by Email" emails?
• [One Time Password Authentication for Expo ID] What is "Authentication by Email" and "Authentication by App"?