After giving so much time towards my game authentication problem solution, I decided to go from scratch with template project.
So I downloaded Minimal project available in github and imported google-play plugin v9.30.
Just applied my application setting and try to run same project but that also can’t able to authenticate.
I am getting this type of log message.
I have already updated recent version of sdk so not exist this kind of mistake.
Following image demonstrate my plugin/android data so that you become somewhat more clear.
Please guide me to solve this problem, I am available always if you have any questions regarding problem.