UPDATE 13:03 GMT - We believe we have identified the issue, and frustratingly for us it has nothing to do with our code. Rather, it seems to be an issue specific to certain versions of Unity (a tool used to build the game). After sending a new build of the app to users who were having the issue, simply using a different version of Unity, the issues seem resolved.
We will keep you posted on further developments and if this is indeed the issue then a new version could be available as early as this evening.
Email support@igpgames.com letting us know your email for Google Play so that we may invite your accountLet us know what device and OS version you are using that is having the issue