Need help with NZW97 Two channel outdoor plug

Hello all. I was updating my device by adding in a new Device Handler, as the new Smartthings app didn’t really see both virtual switches in my Inovelli NZW97 outdoor (dual) plug. It would only turn on one switch / outlet (after moving from classic app to new). So I created a new Device Handler and then changed the type in my device.

Now the new Smartthings app says it “Can’t connect to device. Check device and try again.” To be safe, I unplugged and re-plugged the NZW97 back in. I have removed and re-installed the Smartthings app. Same error.

I am able to use the Smartthings Classic app. It is clear the device type / handler was updated, and it works like a charm. I thought to manually test from within the Alexa app on my phone and it too worked like a charm. But the new app just looks at me and laughs. Any thoughts on what else to try here? I could try to remove the device from my app, but it looks like it wants to fully exclude it and then I assume remove from my hub as well. But if I do that, and re-add, I believe it adds it back in as the old, default device time of a generic z-wave multiswitch; of which I’d have to re-setup again.

If it matters, I have also installed this child switch device handler.

Thanks in advance for any ideas or thoughts on this!