Exreme difficulties re-adding z-wave devices from fibaro

[DirkG]

Some days ago an other user had the same problem with an Aeotec door sensor.
The solution for him was, to lay the smartphone at a distance of about 2 meters far from Homey away while including the device.

Aeon ZW089 recessed door sensor

After replacing the battery of my door sensor homey did not want to see the door sensor anymore. So I removed the doorsensor from homey (unpair) and tried to pair it again. But that fails everytime. Sometimes the message is to try later or unknown failure or did not see the device anymore - move closer (it is on top of Homey). How do I pair the device again?