FCM.requestPermission not working in production

"react-native": "0.47.1",
"react-native-fcm": "^14.0.1",

When in development the permission pop-up does appear.

However, in production when I initialize the App and ask for permission like so:

```
class App extends Component {
componentWillMount() {

FCM.requestPermissions();
}

...
```

nothing happens. Do I need to specify the parameters?

EDIT: Pop up wont appear on Android. Does appear on iOS.