Thank you for using Cocos helper. I recently update the Game services code, but Google also updates the library, so please read this:
Google play services with cocos helper now need set Android Target to 21+. I can see that you already did that.
Why ? well there’s some that need the Android 21+ compiler that is because Google play services not cocos helper at all. Is better to have the your cocos2d-x project and Google play services projects and libraries in the same hard drive.
Please organize that is not a good idea.
It looks likes no one read the Logs error messages, it says that you cannot find support.v4, it means you need to import in your project android-support-v4.jar file. I’m not sure why some people need this is not really necessary to make it work but I’m pretty sure that is the final problem. If there’s any problem just write here.