Z-wave devices just stopped working throughout the house (14 Feb 2023)

[h0ckeysk8er (Bruce Pinsky)]

@Magiccarpetride9

Hi all! Brand new to the community here - far from a technical expert and looking for any/all help possible. Have had a great running Z-Wave set up on Smartthings V2 for many years now with 50+ GE/Jasco switches/dimmers. About 8 weeks ago, I started having the issue where everything is online, but the app will not update the on/off state or control these devices. I have performed multiple Z-Wave network repairs, excluding and reincluding, rebooting the hub, none of these fixes have worked. I tried the cool community driver by @philh30 and it will now update the on/off state within the app when I manually press the switch, but still not able to control these devices via the app. Any help anyone can provide is MUCH appreciated!

Are any/all of these devices S2 Security capable and if so, did you set it up with the QR code or manually entering the DSK so they successfully secured to the hub? Do you have other Z-Wave devices on your network?

Can you publish the details from one or two of your devices from the API Browser+ so we can see info about the devices and hopefully point you in the right direction?