I deleted the Library and the DeGruyter cookie before testing, and I cannot access any proprietary content on degruyter.com, either. It seems our subscription has expired and needs to be renwed. I think, it's as simple as that.

Same here. When clicking on the blue access-button, it says: We are sorry, but you are not authorized to access this resource. It may require an approved application to access. You can verify your eligibility at https://wikipedialibrary.wmflabs.org/. If you think you have reached this screen in error please contact The Wikipedia Library at wikipedialibrary@wikimedia.org.

Near the same: clicking the blue access-button, it says: "Should you have institutional access? Here's how to get it ..." on a yellow background. And I don't have access to restricted contents anymore.

Thanks for the report - we'll get in touch with De Gruyter.

WMDE has received feedback from volunteers that the access should be working again.

Yes, it works again. Thanks!

Gladly, I can confirm that it works again for me, too. DeGruyter is back again on the Library platform. Remains to be seen why the issue appeared only in some accounts. But this may remain unsolved, as everything seems to be back ti normal. Many thanks for your assistance!

@Samwalton9 Can you remove the service issue badge from the TWL interface?

In T330289#8660385, @TrangaBellam wrote:

@Samwalton9 Can you remove the service issue badge from the TWL interface?

Done - thanks for the reminder!