If you have opened the Expo ID site in an email application (e.g. Yahoo! Mail) instead of one of the recommended browsers: Safari, Google Chrome, or Microsoft Edge, you may not be able to proceed properly.
First, launch one of the recommended browsers: Safari, Google Chrome, or Microsoft Edge, then copy and paste the URL below, and enter your Expo ID and password to log in.
Expo ID login:
https://usrmng.accounts.expo2025.or.jp/idmng/users/screen/menuScreen

For information on how to set up the recommended browsers, please refer to section "2.3 Setting Up a Supported Browser" in the Expo ID Registration Manual below.
Expo ID registration manual:
https://www.expo2025.or.jp/wp/wp-content/themes/expo2025orjp_2022/assets/pdf/tickets-index/id_registration_manual_en.pdf

Paper tickets/ticket exchange vouchers are also available at the site below:
https://www.expo2025.or.jp/tickets-index/voucher/　
(Please note that this page is only available in Japanese)