A 404 error when accessing an assignment or reminder link indicates that the content or campaign is no longer available or that the access does not correspond to the user.
Reason for the behavior
This behavior can occur for the following reasons:
The campaign has ended
The user tries to access from a link that was sent to another person
The authenticated user does not match the original recipient of the email
The campaign content was deactivated by an admin user
Considerations
This behavior is expected and is part of the platform's security validations
Campaign links are associated with specific users
Once the campaign has ended, access is no longer available
💡 Best practices
Verify that the user accesses from their own email
Validate that the campaign is active
Avoid deactivating content associated with ongoing campaigns