I have two Smartthings Smartsensors, one the newest version, the other is v2. I’ve had them for probably close to a year and not installed them, but now have uses for them. In trying to pair them to SmartThings using the iOS app. When I attempt to pair either one, the hub is recognizing them both as “Z-Wave Repeater” and not as a Smartsensor. I’ve done hard resets on both and tried multiple times with the same result. In the case of the newer sensor, it has a QR barcode to scan and that result is "Multipurpose Sensor (IM6001-MPP), yet it still pairs as a Z-Wave Repeater. On the off chance there is a hub issue, I power cycled the hub and that also did not change the outcome.
Right now I don’t have any other devices at my fingertips to add to see if this is an issue larger than just these sensors.