The FAQ says support for Win phone
The FAQ says the following:
What mobile devices do you support?
Cozify app works in iOS 6.0 (or later), Android 4.0 (or later) and Windows Phone 8.1 (or later).
The app in windows store does not work with the current version of the firmware of the hardware, will there be a update to the windows app in the near future?
the Windows Phone support ended officially at the end of 2016.
Jarkko / Cozify