Need help with Google Play

So ive downloaded the latest google play plugin.
Set it up properly
Constants Class Name = the Bundle Identifier ive set up
Resource Definition = the Resources from the Achievment section in my Dev Console.

Attached is the script I use, which worked a year or so ago when I last updated my game, but now its no longer working.
The code on my button is simply

if(Gplay.IsAuthenticated() == false)
            {
                Gplay.SignIn();
            }else
                Gplay.ShowAchievements();

I run my game, click the sign in button.
The green Google Play popup will display with my games logo on it. Then it will disapear, then think for 20 seconds (with the white thinking swirl) then everything goes away like nothing happened.
It doesnt log in, doesnt give me the option to select an account. And if I click the button again it repeats the process.

I cant for the life of me figure out what is going wrong :frowning:

2366933–160723–gPlay.cs (1.6 KB)

Figured out the problem.

I hadnt set up my Developer Console to account for the new version, so it didnt recognise it.
Set it up for Alpha access and its all good now.