Please also consider the following points for Felgo:
Our concept to develop using DEPLOYMENTFOLDERS and switching to the QRC system for publishing is not available for Windows Phone (the specified DEPLOYMENTFOLDERS are not packed with the application package automatically). So please always use the QRC system for adding your application resources.
Keep in mind that some Felgo components that use native device features (e.g. NativeUtils, Felgo Plugins) may not work on Windows Phone as the engine core only includes implementations for our main target platforms Android and iOS.