Safety Stop
Your desk "safety stopped" because it thought it detected a collision. This feature of your desk is designed to reduce the risk of damage to people, pets, or property that are in the path of motion of the desk. Unfortunately, the detection method sometimes detects a "collision" when there's nothing there. If your desk is clear of obstructions, manually tilt up or down for 1 second and release to send the desk to the preset it was traveling to.

Safety stops can be annoying if this happens frequently. The detection occurs in the motor power module ("control box") that came with your desk. For this particular desk, unfortunately Tempo is not able to communicate with this module to reduce the sensitivity.

How To Reduce Collision Detection Sensitivity
While Tempo is not able to change the sensitivity setting for you, refer to your desk's user manual or standingdeskreference.com to see if your desk offers a way for you to manually change the collision sensitivity.