(Updated on January 25, 2023) We received additional information from the provider regarding this matter.
The suspended PDF download function is scheduled to resume from 19:00 on Monday, January 30, 2023.

Please see the details from the link below. (Japanese only)
https://elib.maruzen.co.jp/app/eguide/announcement_230125.pdf

We apologize for the inconvenience, but thank you for your understanding and cooperation.

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(Updated on December 19, 2022) We received additional information from the provider regarding this matter.
Please see the details from the link below. (Japanese only)
https://elib.maruzen.co.jp/app/eguide/announcement_221219.pdf

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The Maruzen eBook Library has informed us that the PDF download function for titles provided by Kodansha will be unavailable after 17:00 on Friday, December 2, 2022.
Browsing and search functions will continue to be available after the above date and time.

According to the provider, it was confirmed that a user belonging to a contracting institution of Maruzen eBook Library shared the downloaded PDF file with a community of about 30 people, which led to this measure.
We apologize for any inconvenience caused by the sudden service outage, and thank you for your understanding.

For details, please refer to the link below. (Japanese only)
https://elib.maruzen.co.jp/app/eguide/announcement_221130.pdf