You can change the minimum temperature threshold from 73 degrees to a lower number if you'd like. You do this on the Ecobee website - not in the app or on the thermostat itself. Buy the Ecobee here and support this channel: https://amzn.to/4e2yoUk
Login to https://ecobee.com
Choose Settings
Choose Preferences
Choose Cool Set Point Range (or Heat Set Point Range in the winter)
Use your mouse to change the upper and lower limits
Click the x in the upper right to exit this menu and you'll see the new setting immediately on the left.
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How to Change Your Ecobee Thermostat Temperature BELOW 73 Degrees! | Step-by-Step Guide