If you are unable to download the app from Google Play, follow the manual installation instructions in our article describing where to get the Xensr app.
If you've installed the app and it's not working correctly, we sincerely apologize for the inconvenience. While we test our app on as many Android configurations as we possibly can, inevitably there are some configurations that slip through untested. Please contact our support team and let them know your phone's manufacturer and model, and your Android OS version. We'll work on supporting your Android setup as soon as possible.