I've followed these steps from the manual:
[quote:37zneqyv]To ensure your finished game has permission to access the Google Play Game Services, click the Linked apps section while editing the game in the developer console. Click the button to link a Web app. You will need to fill out details such as the URL it is played from and some authorisation details. Once completed, you should be given a client ID. This should be in a format similar to:
12345678987-abcdefghijklmnopqrstuvwxyz1234567890.apps.googleusercontent.com
But all Google Play Dev Console lets me fill in is name of the app and the package name. I'm not sure what to put in the package name, so I just use package.MYGAMENAME.com (I replace MYGAMENAME with the real name). I click continue and authorize my app now, and it says:
[quote:37zneqyv]API requests are sent directly to Google from your clients' Android devices. Google verifies that each request originates from an Android application that matches the package name and SHA1 signing certificate fingerprint name listed below.
I have no idea what I am supposed to do here?