because of few missed files (e.g. wifi_big.png, etc.) I was not able to test your application. Nevertheless I reviewed it and found the potential cause of the issue. Please see the GUI components: Settings_main::Settings_main, Settings::Settings, Settings::Settings_main, Settings::Settings_Wifi. All these components are derived from the Core::Root class. For example:
Within a typical EmWi application it should be always one (single) component derived from Core::Root. All other components should descend from the Core::Group class. Please see also: Assembling the application. I suppose, when adding the components for Settings, etc. to the project you have mixed the Application with Component template:
How to correct this?
When you select the bricks representing the components (e.g. Settings_main) you see in Inspector window its attribute SuperClass. Just change this attribute to the value Core::Group as shown below. Repeat this operation for all above mentioned components.
Does it solve the issue?