Vera app on IOS 15 missing thermostat controls

Upgraded to ios 15 and noticed that the Vera app has a missing button for “heat” when a thermostat is selected. The only choices are {“auto”, “cool”, and “off”}. Version prior to this upgrade was fine with a separate button for “heat”. Heating system will not engage while left on “auto”, so need way to switch on the “heat” mode for the thermostats. Works fine when physically set on the thermostat itself or using the web interface, but not via ios app. Have 6 CT-100/101 units that have been operating just fine for the past 5+ years. Not sure if its a fluke or bug.