I have good news! There's a new version of the Android app which fixes this issue (version 5.20.2).
I have just sent this version to the Google Play Store, however it could take a couple days before it arrives to your device. If you want to skip the wait, and are comfortable installing apk files directly to your device, you can get it here right now: http://data.warlight.net/static/Unity/Warzone.apk
I'm really sorry for the troubles. I will strive to ensure this doesn't happen again.