I am trying to upload my app to Google Play using the developer console. As of a week or so ago they have made it so that each app has a unique key string. You have to use t
New Developer Console preview
"The following features are not yet supported in the new Developer Console. If you need to use these features, you can click “switch back” at any time to use the old Developer Console.
We’re working on adding these features and many more, so stay tuned!"