Mine is working perfectly without have to upload an alpha o Beta or any kind of apk for that matter , here is what I have done:
I started the game service from the developer console,
Add the package adress (com.yourcompany.yourappname) .
Add game detail (only required ones).
Add achievement (at least five - with required detail before publishing).
Now I think the trik is here:
I copied “get resource” completely to res/ values XML file
I also add each achievement to project setting>android
And then now I call UI login without any problem and for achievement the tappy chicken example seems fine for me so far…
I hope my experience could help some one.
I haven’t tampered with leader board yet so I don’t know anything about it yet