Do you see the option available in the Alarm.com Website? How long ago did this occur?
is there a way to set a auto (heat+cool) threshold based schedule? I am currently using Honeywell T6 Pro which doe support auto mode from panel.
There is not a specific Auto threshold that can be set. All scheduling options available through Alarm.com are located on the Alarm.com website. Navigate to the Thermostat Card then click on Schedules. More information on setting up schedules can be found below.