I have a Lutron SmartBridge and three dimmers which work great on ST. I just added a fourth today and now all four show in ST as unavailable. Oddly, if I open the device in the ST app I can work it fine – despite the Unavailable error. And they all work fine from the Lutron app.
I’ve tried rebooting the hub, rebooting the Lutron bridge. Any other ideas? I’d prefer to avoid deleting the Lutron SmartApp since I assume that will yank all the devices from their routines.