Does the node show up in your zwave control panel?
Yes, same behavior as described above. The switch shows up in the panel but shows “ready” instead of a switch control.
I had this problem the other day as well. A Z-wave plus switch showed up as a Z-wave (non plus) switch. The “capabilities” section showed “listening” as it’s only function, while all of my other switches showed “listening, routing, beaming, zwave_plus”.
To fix this I had to removed the switch from my network and re add it. As another user mentioned, be sure to use “add node secure” and make sure you have a network key in your config.