Is it ONLY the Lumia 540 that has the issue? > No, it doesnt work on Lumia 640 as well. Have you tested your app in one of the provided Microsoft emulators? I am not sure if we can install app store build on emulator. My phone store or debug build works fine on devices. Its the App store build...
I have created a windows 10 app store build using appcelerator. It creates <appname>_x86.appxbundle. When I install the same on Lumia 540, it prompts me to install but then nothing happens. The app is not even in the installed app list.