Just got this to work.
Here’s what I did:
Installed the Z-Wave Switch and Child Mc Driver from here
Added the device by selecting the zooz zen 52 double relay in the SmartThings app.
It showed up as a enerwave dual relay.
In the settings I was able to toggle “create single device for switch one” and I now have individual control of both switches.
I was actually trying to add it as a zooz double relay, as some people seem to have done successfully. I had added both the zooz as well as the driver linked
There may be other ways to add the device, but this worked for me.