A.
Please select "One-time password authentication (email)" on the “Settings for Identity Verification Method” screen that appears after entering your Expo ID and password. A disposable password with a six-digit number will be sent to the email address registered to your Expo ID. Enter the six-digit number from the email in the “Settings for Identity Verification Method” screen to set it up.
Detailed instructions on how to set up your Expo ID are included in the Expo ID Registration Manual, which you can find at the following link.