What firmware version is hub running? In settings zwave details there is also a firmware update for the radio. Make sure both are on the latest build. There have been a lot of updates recently.
11 is the failed pairing. Pull the air gap on the switch and leave it out until the device is removed in later step. Run a repair on 11. Safely shutdown the hub and pull power for at least 1 minute. Power it back up and run repair again should go to failed. Click remove. Factory reset the device and the run exclude. Then join it back. Should be good from there on.
It's not an s2 device is it? How far away from hub is it? Have line of site to hub or are there walls in the way? Try to pair it before the timer gets to 44 and let it sit for a minute or two after the timer runs out if it is initializing and hasn't prompted for a name yet. The pairing process will keep going after the time runs out.