Every Barrier is equipped with laser sensor on front side of Barrier's cover and it's function is to detect car on top of the Barrier. If the Barrier detects that the vehicle is parked too close to or above the Barrier, the message CAR ON TOP will be displayed. In this case, it is possible to raise the Barrier by clicking on the car icon and pressing FORCED WORK in the dialog box. Only the administrator/owner of the Barrier can do this.

If there is no obstacle too close or above Barrier and you get CAR ON TOP in App, that means laser is damaged or just need cleaning. User should clean the laser according to the instructions provided in the user manual: https://support.parklio.com/portal/en/kb/articles/parklio-barrier

If you have tried everything of the above and CAR ON TOP error is still present, provide telemetry report to Parklio support department at: support@parklio.com.