Here, Boys hostel face recognition shows online but still it doesn't recognizes the faces, It shows authentication failed when students are trying for their attendance. Could you please explain me the error message which is showing here . Please reply back as soon as possible.
The authentication failure could be related to the access group or authorization mode, so I would check those first as suggested above. Also confirm the terminal firmware matches the HikCentral ACS version you are running, especially if the software was recently updated. A screenshot of the access group, permissions, and authorization settings would help narrow it down. For manually checking student attendance percentages while sorting this out, this online tool for an attendance calculator is useful.