Sure thing, I use it in a economy purpose on my side. When a window/door is opened more than x min, it would suspend the HVAC so I didn’t try the scheduling aspect but I believe it should work.
If you need support on the smartapp itself, you can certainly contact the app owner at:
I quickly checked the code and you might check the ST app logs to see if the event showing up. One reason the app would not work properly is if you didn’t properly setup your hub localization (timezone and time/date). ST has no notion of local time so you have to have things consistent. I don’t recall if this is only based on the hub location