Red series Gen 2 (LZW31-SN) not sending updates to Smartthings V2 Hub

I’m having some difficulty getting basically any messages from the switch.
Everything the other way works - I can set parameters, turn the hub on or off, or set notifications.

But unless I hit “refresh” on the device handler the hub never updates the on/off settings, and scenes don’t seem to ever be triggered on the hub. It seems as if the communication to the hub is all one-way.

The device actually autodetected as LZW31-SN based upon it’s raw description:
zw:L type:1101 mfr:0000 prod:0000 model:0000 ver:0.00 zwv:0.00 lib:00 cc:5E,26,70,85,59,55,86,72,5A,73,98,32,9F,5B,6C,75,22,7A role:05 ff:8600 ui:8600

The security level was set to this:
networkSecurityLevel: **ZWAVE_S2_FAILED**

The firmware for the switch is v1.35.

Can anyone think of a reason I would be seeing this kind of behavior and this hub?

I had the same ZWAVE_S2_FAILED and had to reset the switches and re-pair them with the hub. I also could not get association s working until I fixed that. You want to see ZWAVE_S0_DOWNGRADE instead.