I am pulling my hair out too! I overlooked the 48hrs - it sounds about
right now that you mention it. Could it possibly be something to do with
home/away mode which kicks in after 48hrs? I'll let you know if I get
anywhere....
Great it worked for you! Unfortunately for me, my schedule is enabled on
the thermostat but it still randomly doesn’t work (works around 50% of
the time) otherwise manual boost always works.