If you’re not already, use the official Zooz drivers for your ZEN34’s.
Install the driver from the link above to your hub.
In the mobile app, go into the device’s tile, and under the “3 dot” menu, select “Driver”. Then “Change Driver” to the Zooz driver you just installed. You can also select a new driver for a device in https://my.smartthings.com/advanced.
You may need to refresh (pull down on the screen when in the device details UI in the mobile app) to get all the values to sync.