To modify the temperatures of your schedules in "Programming", click on "My residence" (the 3 bars at the top, on the right of your screen from the application), then on "My temperatures".
You will then find your four presence temperatures and the Frost Protection, Night and Absence temperatures.
On the client interface, a presence temperature can not be lower than the temperature preceding it. It is therefore necessary that "Presence 1" is lower than "Presence 2", that "Presence 2" is lower than "Presence 3", etc.
Click on the pencil to modify the temperature, and on the floppy disk to validate a modified temperature.