Ok, well I couldn’t find the exact post I had, so let’s work off of memory 
Start here:
https://account.smartthings.com/
That’s the IDE. Use the same Samsung credentials as you do for the mobile app.
Once there, you will see these “tabs” across the top:
If you don’t have a lot of devices, click on My Devices, otherwise go to My Locations, click on your location, then click on the Room where the device “lives”. Click on your device.
You’ll end up at the device details page, which is very very helpful. Here you can change a few things for the device, as well as see device event logs. Here’s a small snippet:
Scroll down and click on Edit:
Change the Type field. Here’s mine:
You have 3 options from the list:
I would go ahead with “Z-Wave Lock” vs what I told you earlier. That should work just fine, assuming your Zwave mesh is healthy. You can also try the one I mentioned above. I can’t see ST’s github code for the other handler, so I’m not sure what that one actually does compared to the others.
Give that a shot and let us know how it goes?