Honeywell TH8320ZW temp control

Hi. I am new to SmartThings and the community, having just purchased and installed the hub V2. I previously was using the Vera Lite.

Everything works great except the thermostat. I have excluded, then included it. It is connected fine. I have turned off the scheduling in the thermostat so it is being run only by ST. Schedule works great with one exception: our nighttime temp is set to 62, but somehow it runs at 71. The thermostat shows it’s set to 62, app shows set to 62, yet it keeps running at 71. I can’t seem to find a default minimum temperature setting in the thermostat it is reverting to or in ST that might be overriding the schedule at night. I’ve gone through all the codes I can find in the thermostat. Any ideas?