New Nest Thermostat Plugin (WWN) For UI7 not working

Is there any trick to getting the WWN thermostat plugin to display correctly in the app? I am seeing “??” in the temperature set point field and cannot use the + or - keys to change anything.

I’ve emailed the Imperihome folks about this, I’ve not got a response just yet. I did notice that the other plugin for nest by watou seems to work with imperihome