Check whether your location is required by your company.
Check whether the GPS positioning function is enabled.
Check whether the security management software has disabled the permission for Mateline.
Restart your phone.
Reinstall the Mateline app.
If you are in a closed environment, such as an elevator shaft, an air raid shelter, deep inside an office building, etc. Move to an open area and try again.
Contact the administrator to check whether the attendance point has been configured.