If this helps, from the 1st post:
INCLUSION INSTRUCTIONS: It is recommended to install the Device Handler BEFORE paring the device for easier setup.
If you are unsure about the device state exclude the device first otherwise it won’t pair (see below)
To pair the device, Select Add New Device from the MarketPlace on your ST phone app.
Then press and release the Z-Wave button with a pin (tiny hole at the bottom of of the sensor) TWICE quickly
It should complete pairing within 30 seconds
EXCLUSION INSTRUCTIONS: If you deleted the device without excluding it won’t pair up again until you exclude it.Set the hub into exclude mode (log into the IDE → My Hub → View Utilities → Z-Wave Exclude.
Press and release the Z-Wave button with a pin (tiny hole at the bottom of of the sensor) TWICE quickly
FACTORY RESET: Remove the cover and press and release the Z-Wave button with a pin (tiny hole at the bottom of of the sensor) 10 times within 10 seconds.