Smartwise thermostat automaticaly turns on every friday and saturday

I recently bought a Smartwise thermostat that is eWelink compatible. I installed in on Friday 17 of February. Now every Friday and Saturday morning (at exactly 5:00) it turns itself on, like there is some kind of schedule, but there is no schedules on this device.

In order to avoid turning on the heating, I have to set a low temperature.

I activated push notifications so I know exactly when the device turns itself on, but there is no log in order to have a clear view about what it turn it on.

Any ideas on how to fix this very disturbing behaviour?