I got an Android apk app here that is supposed to run on Blackberry. I converted it with apk2bar, signed it with my debug token. The device also has the debug token installed and developer mode enabled. Installing the app with blackberry-deploy went fine and the app appears on the home screen. When started, the app asks for permissions (GPS etc), after confirming it says "Initializing", then the app just disappears without any errors. 

How can I find out what's going wrong?