Note: this article only applies to those currently in the Android testing program.
If you are having trouble leaving the Android beta program and downloading the public release, here are the necessary steps(this can be accomplished on both mobile and web).
First you will need to visit https://play.google.com/apps/testing/app.phantom
If you are logged in with an account that you opted into beta testing for, you'll see the "Leave The Program" option.
Click "Leave The Program".
You can now re-install the app via Play Store.