ScheduleThermostats are no longer automatically adjusting the heat

My two thermostats are set up on heat schedules and they no longer automatically adjust the heat in the house. How do I fix this?

I have resent the thermostat schedules you have programmed to your control panel. Could you tell me how the system reacts today (or the next few days if needed) and whether the schedules are now being followed?

Just to follow up… Yes the schedules for the thermostat are now being followed… Thanks