Are you using the official device type? From my reading its broken. Check out this thread Aeotech Multisensor 6 (gen 5 zwave plus, model ZW100-A)
Use this device type https://github.com/robertvandervoort/SmartThings/blob/master/Aeon%20Multisensor%206/device_type-aeon-multisensor6-v2.2
I’ve been using this for awhile now with great success. I have mine reporting every minute with a pir reset of 10 sec. Just be careful on what you choose for a reporting interval as it will effect battery life. Hope this helps.