bob123

I was using the free version knowing I would not be close to 8 messages a day.  
Have not seen a reoccurrence since upgrading. 

Here is the solution from the great support staff (Chris) - it worked great.  Basically resets the configuration/system tab on the admin manager and restores ability to have a zooz 700 zwave stick instead of a zmatter.  One additional step I found was to re-enable insteon and zwave on the configuration/system tab.  Do not do migrate to zmatter.
1) ssh to Polisy
2) run command:   sudo rm /var/isy/FILES/CONF/0.UCF
3) close ssh (unless you want to keep it open for something)
4) Restart IoX
5) Go to Configuration Tab in Admin Console, you should see a button "Migrate to ZMatter Z-Wave", this indicates that you are now currently using original Z-Wave.  (Don't press the button obviously)
6) Update the values in the Configuration Tab to what they were before
7) Under the Z-Wave top level menu you should see all the options (like add, remove, etc.)

See my thread from a few weeks ago.  My issue was very similar - I was going from isy to polisy.
The last response in the thread is the solution I used that worked perfectly.   Not sure if eisy supports the zooz stick or only zmatter, but worth a shot.  Polisy supports both.