After the 2025-01-17 you get a An error occurred: The redirect URI included is not valid when trying to authenticate.
On 2025-01-17 the URL of the app changed. You have to update the GitLab registration:
- In GitLab, navigate to the registration of the
Include GitLab for Confluence - Edit the current registration
- Update the Redirect URI to
https://include-gitlab-for-confluence.mibexsoftware.com/oauth-callback
Alternative, you can recreate the registration.